Fertile Period Research Articles

Fertility awareness, perceived factors and approaches to improve contraceptive uptake among sexually active adolescent girls in Phalombe, Malawi: a mixed-methods study

BackgroundHealthcare practitioners and policymakers in Sub-Saharan Africa face a significant health challenge due to the insufficient fertility awareness and other perceived health outcomes in contraceptive use among adolescent girls. This has resulted in a rise in unplanned pregnancies and other adverse fertility-related health consequences for adolescent girls in Malawi. Consequently, this research examines fertility awareness, perceived factors, and strategies in contraceptive adoption among adolescent girls in Malawi’s Phalombe district.MethodsThe study utilized a mixed-methods approach, with the quantitative component employing structured questionnaires administered in person to collect data from school-going adolescent girls in three traditional authorities in Phalombe district, Malawi. The research employed multivariate logistic regression analysis, and its findings were corroborated with qualitative data obtained through focus group discussions involving adolescent girls in the same environment.ResultsThe majority of adolescent females were unaware that their fertile period occurs in the middle of their menstrual cycle, indicating a lack of knowledge regarding their reproductive health. The study examined data from 102 sexually active adolescent females in the quantitative component and 72 adolescent girls in the qualitative component. For the quantitative strand, participants' ages ranged from 13 to 19 years, with a mean age of 16.5 and a standard deviation of 1.5. In the qualitative portion, the study conducted interviews with adolescent females aged between 10 and 19 years, with a median age of 15 years. Services that were not tailored to youth needs served as barriers to contraceptive use. Factors that facilitated contraceptive use included a preference for receiving contraceptives from peers, which was associated with a higher probability of usage (AOR: 4.80, 95% CI 1.31–17.32). Moreover, adolescent females who were identified as Catholic (AOR: 14.01, 95% CI 2.50–78.47) or belonged to other Christian denominations (AOR: 5.85, 95% CI 1.20–28.25) exhibited a greater likelihood of using contraceptives compared to their Muslim counterparts. The focus group discussions suggested making contraceptives available in educational institutions, analogous to the distribution of iron supplements.ConclusionAdolescent girls in the Phalombe district seemingly have low awareness and knowledge of their fertility, which may lead to unintended pregnancies. Adolescent girls are unable to access modern contraceptives, and there is a need for youth-friendly structures when delivering contraceptive services. Additionally, participants indicated that community midwives and health surveillance assistants should provide contraceptives within the communities to reduce distance.

An Extended Method Based on the Geometric Position of Salient Image Features: Solving the Dataset Imbalance Problem in Greenhouse Tomato Growing Scenarios

Machine vision has significant advantages in a wide range of agricultural applications; however, acquiring a large number of high-quality image resources is often challenging in actual agricultural production due to environmental and equipment conditions. Therefore, crop image augmentation techniques are particularly important in crop growth analysis. In this paper, greenhouse tomato plants were used as research subjects to collect images of their different fertility stages with flowers and fruits. Due to the different durations of each fertility period, there is a significant difference in the number of images collected. For this reason, this paper proposes a method for balanced amplification of significant feature information in images based on geometric position. Through the geometric position information of the target in the image, different segmentation strategies are used to process the image and supervised and unsupervised methods are applied to perform balanced augmentation of the image, which is combined with the YOLOv7 algorithm to verify the augmentation effect. In terms of the image dataset, the mixed image dataset (Mix) is supplemented with mobile phone images on top of in situ monitoring images, with precision increased from 70.33% to 82.81% and recall increased from 69.15% to 81.25%. In terms of image augmentation, after supervised balanced amplification, the detection accuracy is improved from 70.33% to 77.29%, which is suitable for supervised balanced amplification. For the mobile phone dataset (MP), after amplification, it was found that better results could be achieved without any amplification method. The detection accuracy of the mixed dataset with different data sources matching the appropriate amplification method increased slightly from 82.81% to 83.59%, and accurate detection could be achieved when the target was shaded by the plant, and in different environments and light conditions.

What drives period fertility rates during post-recession spells?

What drives period fertility rates during post-recession spells?

Effect of Watering Gradient on Chlorophyll Fluorescence Parameters of Prunus domestica Trees

Mature 5-year-old Prunus domestica trees were used as research objects in plantation areas in arid and semi-arid regions of northern China in Hohhot city; three irrigation gradients and a natural control were set up according to the determination of wilting coefficient and field capacity, and FluorCam 1000-H chlorophyll fluorescence parameters of plant leaves were determined by using a portable chlorophyll fluorescence imager. The results showed that the effects of irrigation gradients on potential photochemical efficiency, maximum photochemical efficiency and non-photochemical burst were not significant (p > 0.05), and the effects on photochemical burst were significant (p < 0.05) at different fertility periods. The potential photochemical efficiency, maximum photochemical efficiency and photochemical burst basically showed a trend of increasing and then decreasing, and the non-photochemical burst showed a trend of decreasing and then increasing during different fertility periods. During the same fertility period, the potential and maximum photochemical efficiencies were significantly increased, and the photochemical and non-photochemical bursts were somewhat reduced under the full irrigation gradient. Therefore, the chlorophyll fluorescence characteristics of Prunus domestica trees at different fertility stages can be regulated by controlling the irrigation gradient to increase the activity of photosystem II (PSII), which in turn improves the photosynthesis of the plants.

The Billings ovulation method: data and evaluations from the World Health Organisation multicentre study

Two articles have recently been published reporting the results of a study conducted by the World Health Organisation on the Ovulation Method, which is a natural method of family regulation based on a woman's self-observation of her cervical mucus and its changes during the menstrual cycle, and which allows her to recognise the infertile, potentially fertile, and maximally fertile phases of the cycle.

ANALISIS KEBERLANJUTAN PERKEBUNAN KELAPA SAWIT SWADAYA DI KECAMATAN SEKERNAN KABUPATEN MUARO JAMBI

This study aims to determine the general description of smallholder palm oil in Sekernan District, Muaro Jambi Regency, and analyze their sustainability status and sensitive attributes that affect them. The method used in this study is descriptive qualitative and quantitative analysis to determine the status of the sustainability index of smallholder palm oil using MDS Rapid Apparasial analysis, which is modified to RAP-PalmOil, and leverage analysis is used to determine its sensitive attributes. This research was conducted in Suko Awin Jaya, Bukit Baling, Tantan, and Tunas Mudo villages. The sampling location in this study was determined purposively (purposive) with a sample of 100 respondents, who were then determined by simple random sampling. The study results show that the sustainability status of smallholder palm oil in Sekernan District is multidimensionally considered quite sustainable. The economic dimension provides the highest sustainability index and is followed by the social and ecological dimension, which is considered quite sustainable. The sensitive attribute or attribute that has the most influence on the sustainability index value on the ecological dimension is the fertilization period, while the economic dimension is farming income, and the sensitive attribute on the social dimension is conflict resolution

Glacial interglacial variations in the natural iron fertilization during the low sea ice periods along the eastern continental margin of Antarctica

The Southern Ocean sequesters atmospheric CO2 through biological pumps, though its driving factors are debated. Modern productivity is regulated by natural iron fertilization from micronutrient influx through dust, regeneration, and Antarctic glaciers and sea ice melting (ice melt). The productivity along the eastern Antarctic continental margin was low during the last glacial period and gradually increased through the deglacial to Late Holocene, marked by distinct productivity peaks. The micronutrients also varied similarly, with reduced glacial influx and an increase in the Holocene, which may cause productivity peaks. Therefore, the coherence of enhanced productivity and micronutrient influx is considered as enhanced iron fertilization period. The productivity peaks declined within ∼1.5 kyr, mostly due to the Ekman transport and sea ice formation. Along with ice melt, the independent weathering pattern that responds with glacial- interglacial ice volume changes suggest the source of micronutrients is not terrigenous. Shelf interaction of oceanic currents can influence the water column nutrient stock significantly, while its utilization occurs during reduced ice periods (low sea ice and high glacier melting) for productivity. Therefore, enhanced natural iron fertilization periods are considered as ice low periods that occurred in a periodicity of 2 kyrs, at ∼7.5 kyr BP, ∼5.5 kyr BP, ∼4 kyr BP, ∼ 2.5 kyr BP, and ∼0.5 kyr BP, likely due to the combined effects of atmospheric and oceanographic factors driven by the high amplitude regional temperature variability during the mid to late Holocene.

Female landscapes

The aim of this article is to reflect on the presence of colonized women in photographs and other representations, such as drawings, posters, postcards, exhibition catalogues, newspapers and magazines, which were disseminated in the context of the Portuguese colonial expositions, and in exhibition spaces conceived by the Portuguese with a colonial component. Generally speaking, the exhibitions sought to put forward the progress, taking into account land, rail and sea transport, but also roads, communications, trade, industry, arts, architecture, culture, and the most recent advances in science and medicine. The exhibitions were also places where the logic of colonial models was staged, showing a clear relationship between colonial domination and gender representation. The research includes several materials produced throughout the 1930s (a fertile period regarding the Portuguese participation in this kind of international events) intended to publicize these exhibitions or serve as a complement to them. These materials may include art works or merely propagandistic works, or works that combine both components. The analysis will include materials associated with several exhibitions between 1931 and 1940, such as the International Colonial Exhibition of Paris (1931), the Lisbon Industrial Exhibition (1932), the Portuguese Colonial Exhibition in Porto (1934), the Exhibition of the Portuguese World in Lisbon (1940), and the Portugal of the Little Ones (Portugal dos Pequenitos) in Coimbra (1940). The contexts in which women appear and the way they are represented — as active beings (performing tasks), as contemplative beings (as in natural landscapes) or as objects of sexual desire, revealing the context of power (legislative, administrative, male and colonial) in which the images and the representations were produced — will be analyzed.

Extraction of Maize Distribution Information Based on Critical Fertility Periods and Active–Passive Remote Sensing

This study proposes a new method for integrating active and passive remote sensing data during critical reproductive periods in order to extract maize areas early and to address the problem of low accuracy in the classification of maize-growing areas affected by climate change. Focusing on Jiaozuo City, this study utilized active–passive remote sensing images to determine the optimal time for maize identification. The relative importance of features was assessed using a feature selection method combined with a machine learning algorithm, the impact of both single-source and multi-source features on accuracy was analyzed to generate the optimal feature subset, and the classification accuracies of different machine learning classification methods for maize at the tasseling stage were compared. Ultimately, this study identified the most effective remote sensing features and methods for maize detection during the optimal fertility period. The experimental results show that the feature set optimized for the tasseling stage significantly enhanced maize recognition accuracy. Specifically, the random forest (RF) method, when applied to the multi-source data fusion feature set, yielded the highest accuracy, improving classification accuracy by 24.6% and 4.86% over single-source features, and achieving an overall accuracy of 93.38% with a Kappa coefficient of 0.91. Data on the study area’s maize area were also extracted for the years 2018–2022, with accuracy values of 93.83%, 98.77%, 97%, and 98.05%, respectively.

Effects of brackish water irrigation with different exogenous salt concentrations on the growth and rhizosphere salinity of Lycium barbarum

To investigate the effects of different typical exogenous salt concentrations on total soil salinity and the growth of Lycium barbarum under brackish water irrigation, and to determine the salinity threshold of irrigated brackish water that is conducive to the normal growth of Lycium barbarum while mitigating soil salinity accumulation. Four typical exogenous salts (NaCl, CaCl2, NaHCO3, Na2SO4) were selected and set at four concentrations (0.1, 0.5, 2.0, 4.0 g L−1) to conduct a field crossover experiments in the downstream region of the Hetao Irrigation District. The results showed that in the same fertility period, the growth rates of new branches, ground diameter, and crown width first increased and then decreased with rising concentrations of NaCl, CaCl2, and Na2SO4, but showed an inverse relationship with NaHCO3 concentrations. Furthermore, increasing salt concentrations linearly reduced the yield of dry fruits from Lycium barbarum and led to a notable accumulation of total soil salts. Utilizing an experimental research approach, a comprehensive analysis of involving multiple growth indices, stable yield, and soil salinity control of Lycium barbarum revealed that optimal growth occurs at salt concentrations of 0.1–0.5 g L−1 for different water quality areas within the irrigation area; using the method of path analysis identified the total soil salt and crown width as the primary direct and indirect factors influencing the yield of Lycium barbarum. The results of this study provide scientific basis and significant theoretical support for the safe and rational utilization of brackish water and cultivation of Lycium barbarum in typical regions with varying saline water qualities of Hetao irrigation area.

Impact of Irrigation on Soil Water Balance and Salinity at the Boundaries of Cropland, Wasteland and Fishponds under a Cropland–Wasteland–Fishpond System

In order to explore the effect of fishponds on soil water, salt transport and salinization in cropland wasteland, a study on soil water balance and salt distribution pattern in a cropland–wasteland–fishpond system was carried out in 2022–2023 in a typical study area selected from the Yichang Irrigation Area of the Hetao Irrigation District. A water balance model was established for the cropland–wasteland–fishpond system to analyze the effects of irrigation on soil salinity at the boundaries of the cropland, wasteland, and fishpond. The results showed that the lateral recharge from the cropland to the wasteland during spring irrigation in 2022 was 24 mm, the lateral recharge generated by fishponds to wasteland was 18 mm, and the lateral recharge from fishponds to fishpond boundaries was 34 mm. In the fertility period of 2023, the lateral recharge from cropland to wasteland was 15 mm, the lateral recharge from fishponds to wasteland was 9 mm, and the lateral recharge from fishponds to fishpond boundaries was 21 mm. Due to the low salinity content of fishpond water, it diluted the groundwater of the wasteland, and the soil salinity at the boundary between the wasteland and the fishpond was monitored. The data show that the soil salinity at the boundary of the fishpond was smaller than that of the wasteland, which indicates that the migration of fishpond water to the wasteland will not lead to an increase in the soil salinity of the wasteland, but rather to a decrease in the soil salinity of the wasteland. Fishpond regulation has a significant impact on soil and groundwater, and when the topographic conditions of the Hetao irrigation area allow, the model of cropland–wasteland–fishpond can be appropriately adopted to solve land degradation and increase the economic income of farmers; the results of the study provide a contribution for the improvement of the management of land use and soil salinization in the Hetao irrigation area.

Mycorrhizal fungi in Annona muricata L. rhizosphere in two agricultural production systems in Nayarit, Mexico

Mycorrhizal symbiosis is the association between the roots of several plant species and soil fungi of the Glomeromycotina subphylum. This symbiosis plays a crucial role in plant growth, development, and defense; therefore, understanding the abundance and diversity of arbuscular mycorrhizal fungi (AMF) species associated with plants of economic importance is of utmost concern. The objective of this study was to compare the abundance and composition of AMF communities in two Annona muricata cultivation sites, and in propagated soil, under different agricultural practices. The first cultivation site is under technified management with periodic fertilization and irrigation (TS), while the second cultivation site is under agroecological management without fertilization, irrigation, and with the presence of livestock (non-technified site; NTS). The extracted spores from the collected samples and the trap cultures were taxonomically identified based on their morphology. 13 species associated with A. muricata belonging to seven genera were identified in soil samples. The most abundant species were Funneliformis geosporum, Acaulospora kentinensis and Rhizophagus intraradices with a relative abundance of 45.9, 19.0 and 15.8%, respectively. In the propagation substrates, only 69% of the AMF species found in the field were identified. 11 species of AMF were found in the site with non-technified agronomic management, while only five species were found in the technified site.

Religious leaders’ nuanced views on birth spacing and contraceptives in Sierra Leone - qualitative insights

BackgroundSierra Leone is a religiously diverse country, with Christianity and Islam being the dominant faiths. This religious landscape plays a significant role in shaping attitudes towards family planning and contraceptives. We examined religious leaders’ knowledge of family planning and modern contraceptive methods.MethodsIn September 2021, data was collected from 116 religious leaders in Sierra Leone, including 32 Muslims and 84 Christians from nine different denominations from sixteen districts, through 16 focus group discussions. The data was subjected to a thematic analysis using NVIVO 12 software.ResultsThe study found a spectrum of opinions among religious leaders, both between religions (Christianity vs. Islam) and within denominations of Christianity. There was a general acceptance of natural birth spacing methods, like abstinence during fertile periods, across both Christian and Muslim leaders. Views on modern contraceptives were more divided. Catholics generally opposed them, citing religious doctrines against interfering with procreation. Pentecostals and some Muslims, however, found them permissible under certain circumstances, like promoting family well-being or spacing births for health reasons.ConclusionThe study reveals that religious leaders’ views on family planning in Sierra Leone are multifaceted. Understanding these nuances is crucial for designing effective family planning programs. By working with denominations that are more accepting of modern methods and leveraging the support for natural birth spacing methods across religions, there’s potential to improve reproductive health outcomes in Sierra Leone.

TINGKAT PENGETAHUAN TALASEMIA, PENYAKIT MENULAR SEKSUAL DAN KESEHATAN REPRODUKSI PADA REMAJA USIA SEKOLAH MENENGAH PERTAMA

This PKM Activity aims to determine the level of knowledge of adolescents about thalassemia, sexually transmitted diseases, and reproductive health. The method used in this PKM is material presentation/ counseling and direct interviews using a questionnaire linked to the Google Form application. The results of this PKM activity were obtained as follows; The source of information that plays a dominant role in conveying sexually transmitted infections-HIV/AIDs is the internet, namely 57(53.4%). As many as 76(70.4%) students did not know about thalassemia. Surveys on sexually transmitted diseases/AIDs show that the average junior high school teenager has sufficient knowledge, namely above 50%. Surveys on reproductive health knowledge show that the average junior high school teenager has good knowledge about the physical changes that occur during puberty, including; 1) an Increase in muscle mass (30%), 2) a change in voice (71.8%), 3) hair growth on the face and pubic area (95%), 4) increased sex drive (33.6%). 5) enlarged breasts (17.3%), 6) menstruation started (40.9%). A survey limited to female respondents showed that the level of knowledge about the female reproductive cycle related to the fertile period in junior high school teenagers was around 24 (43.3%) respondents, but 30 (50%) respondents did not know this. The level of knowledge about the fertile period and the possibility of pregnancy occurring in that period are: 1) the response of not knowing was 26 (43.3%), people, 2) immediately after menstruation ended 14 (23.3%), 3) in the middle between two menstruations as many as 14 (23.3%). From the results obtained, it can be concluded that the level of knowledge of junior high school adolescents regarding thalassemia is still very poor, while for sexually transmitted infections and reproductive health, it is at an average level. It is hoped that after participating in PKM, teenagers will have a better level of knowledge than before.

Estimation of winter wheat LAI based on color indices and texture features of RGB images taken by UAV.

Leaf area index (LAI) is an important indicator for assessing plant growth and development, and is also closely related to photosynthesis in plants. The realization of rapid accurate estimation of crop LAI plays an important role in guiding farmland production. In study, the UAV-RGB technology was used to estimate LAI based on 65 winter wheat varieties at different fertility periods, the wheat varieties including farm varieties, main cultivars, new lines, core germplasm and foreign varieties. Color indices (CIs) and texture features were extracted from RGB images to determine their quantitative link to LAI. The results revealed that among the extracted image features, LAI exhibited a significant positive correlation with CIs (r = 0.801), whereas there was a significant negative correlation with texture features (r = -0.783). Furthermore, the visible atmospheric resistance index, the green-red vegetation index, the modified green-red vegetation index in the CIs, and the mean in the texture features demonstrated a strong correlation with the LAI with r > 0.8. With reference to the model input variables, the backpropagation neural network (BPNN) model of LAI based on the CIs and texture features (R2 = 0.730, RMSE = 0.691, RPD = 1.927) outperformed other models constructed by individual variables. This study offers a theoretical basis and technical reference for precise monitor on winter wheat LAI based on consumer-level UAVs. The BPNN model, incorporating CIs and texture features, proved to be superior in estimating LAI, and offered a reliable method for monitoring the growth of winter wheat. © 2024 Society of Chemical Industry.

A Cross-Sectional Comparative Study of Vaginal Microbiota and Spontaneous Abortion at a Tertiary Care Hospital in North Karnataka, India

ObjectiveTo compare the vaginal microbiome in women who have undergone spontaneous abortion with a gestational age of less than 20 weeks to that of women who have a continued pregnancy of the same gestational age. DesignCross-sectional comparative research design. SettingThe study was conducted in a tertiary care hospital of North Karnataka, India. In this rural area, many women lack awareness of prenatal care and women’s health information. Given rising rates of spontaneous abortion, studying the impact of the vaginal microbiome on pregnancy outcomes is crucial for raising local awareness. ParticipantsTwo hundred women; 100 experienced spontaneous abortion within 20 weeks’ gestation, and 100 maintained pregnancy with the same gestational age. MeasuresVaginal swab was used to detect participants’ vaginal microbiota. DNA was extracted from the vaginal samples; the 16S ribosomal RNA sequencing method was used to identify the organisms present. ResultsA pathogen detection rate of 13.15% (n = 200 women) was found in vaginal cultures. The percentages of bacterial detection in women who had spontaneous abortion and those whose pregnancies continued were 19.9% and 7.9%, respectively (p < .05). Compared to women who sustained their pregnancy, women who experienced spontaneous abortion had five common species: Escherichia coli (48%), Enterococcus faecalis (28%), Enterococcus faecium (12%), Pseudomonas fluorescens (7%), and Pseudomonas cedrina (5%); the most prevalent species among those with sustained pregnancy were Lactobacillus iners (58%), Lactobacillus crispatus (32 %), and E. coli (10%; p < .05). ConclusionThe vaginal microbiomes of women with spontaneous abortion were more varied and irregularly distributed with bacteria. The bacteria identified could affect a woman’s pregnancy outcome and perhaps be associated with spontaneous abortion. It is vital for nurses to provide education to women who are in the fertile period regarding prenatal screening, sexually transmitted infections, and perineal care.

A multilevel Analysis of Factors Associated with Unintended Pregnancy in Kenya

Background: Unintended pregnancy is a significant health and social issue in Kenya. This study used data extracted from the 2022 Kenya Demographic and Health Survey, involving 10,302 women aged 15-49 to investigate the prevalence and associated factors. Descriptive statistics and multilevel logistic regression analysis were used to analyze the data. Results: The study revealed that 40% of the pregnancies were unintended. Unintended pregnancy was significantly associated with various factors. Woman’s age affected the likelihood of unintended pregnancy, with women aged at least 20 years having lower odds compared to younger women. Education also affected the likelihood of unintended pregnancy, with higher education levels linked to higher odds. Married and formerly married women had lower odds of unintended pregnancy. Women with 4 or more children, and those exposed to mass media had higher odds. Ever use of contraceptives and knowledge of the fertile period were associated with higher odds. Occupation also affected unintended pregnancy, with professional/managerial jobs having lower odds, while domestic work linked to higher odds. Middle and higher wealth statuses were linked to lower odds. Both places and region of residence also affected the likelihood of unintended pregnancy with rural residence was associated with lower odds, and significant regional variations observed. Conclusion: The study calls for comprehensive access to sexual and reproductive health services in order to reduce the high prevalence of unintended pregnancies in the country. Keywords: Multilevel analysis, factors, Unintended pregnancy, Kenya

Male contraception: Focus on behavioral and barrier methods.

Male contraception includes various methods designed to prevent pregnancy by focusing on the male's role in reproduction. Behavioral methods, such as withdrawal and periodic abstinence, offer non-invasive alternatives that require self-control and precise timing to avoid depositing sperm in the female reproductive tract during fertile periods. However, these methods generally have low effectiveness and rely heavily on user adherence and experience. The male condom, a barrier method, provides both contraception and protection against sexually transmitted infections. Its effectiveness relies on correct and consistent use. Access to comprehensive sexual education and medical counseling is essential to dispel the stigma surrounding contraceptive use and correct misconceptions, ensuring proper usage and ultimately contributing to better reproductive health outcomes.

Hormonal and cycle phase predictors of within-women shifts in self-perceived attractiveness: Tests of alternative functional models

Prior research has produced mixed findings regarding whether women feel more attractive during the fertile phase of the menstrual cycle. Here, we analyzed cycle phase and hormonal predictors of women's self-perceived attractiveness (SPA) assessed within a daily diary study. Forty-three women indicated their SPA, sexual desire, and interest in their own partners or other potential mates each day across 1–2 menstrual cycles; saliva samples collected on corresponding days were assayed for estradiol, progesterone, and testosterone; and photos of the women taken at weekly intervals were rated for attractiveness. Contrary to some prior studies, we did not find a significant increase in SPA within the estimated fertile window (i.e., cycle days when conception is possible). However, within-cycle fluctuations in progesterone were significantly negatively associated with shifts in SPA, with a visible nadir in SPA in the mid-luteal phase. Women's sexual desire and SPA were positively associated, and the two variables fluctuated in very similar ways across the cycle. Third-party ratings of women's photos provided no evidence that women's SPA simply tracked actual changes in their visible attractiveness. Finally, for partnered women, changes in SPA correlated with shifts in attraction to own partners at least as strongly as it did with shifts in fantasy about extra-pair partners. Our findings provide preliminary evidence for the idea that SPA is a component of women's sexual motivation that may change in ways similar to other hormonally regulated shifts in motivational priorities. Additional large-scale studies are necessary to test replication of these preliminary findings.

Medico-demographic and medico-social determinants of the birth rate of the population in the Chechen Republic

BACKGROUND: Over the years, the birth rate in Russia has decreased due to a transformation in the family structure, a change in attitudes toward marriage and family, and economic and social reasons. The ratio of fertility and mortality determines the population reproduction regime, changing economic development and national security conditions. The analysis and assessment of the birth rate in the Chechen Republic is crucial because the results can be used to formulate a system of demographic policy measures considering national traditions of matrimonial behavior. AIM: To develop recommendations for increasing the birth rate of the population in the Chechen Republic as a territory with strong traditions of the priority of family values. MATERIALS AND METHODS: The study was conducted based on official statistics of the Chechen Republic for 2010–2021 and a sociological survey of mothers. RESULTS: Medical and demographic processes in the territory of the Chechen Republic had a general unfavorable trend in the 12-year period from 2010 to 2021. The only positive aspect that can be considered is a threefold decrease in the birth rate in the same period among mothers aged 40 years, as older mothers carry a large burden of chronic pathology, causing a risk to the health of newborns. CONCLUSION: Negative stable trends in age-specific decline in fertility in the reproductive period among women in the Chechen Republic indicated the unfavorable demographic situation in Russia, despite the priority of family values and stable traditions of large families. The reserves for improving the demographic situation in the region are hidden in the need for systematic information support for families to use their rights to state benefits aimed at protecting motherhood and childhood, monitoring and evaluating the effectiveness of these measures.