Handheld Electronic Devices Research Articles

Measuring pain intensity through physical interaction in an experimental model of cold-induced pain: A method comparison study.

Assessment of pain is challenging given its subjective nature. Standard pain assessment tools have limitations. We aimed to compare the verbal numeric rating scale (NRS) and Grasp, a novel handheld electronic device that reports pain by squeezing. To compare Grasp and NRS, healthy adult volunteers were invited to undergo two subsequent standardised tests of cold-triggered pain using a cold pressor test (CPT) at a temperature of 3°C. Pain intensity was in a randomised manner reported by NRS (scale 0-10) or by squeezing Grasp (0-3 V) during the two CPTs. A third CPT was performed 1 to 14 days later where subjects reported pain by Grasp a second time in order to study the association of repeated Grasp measurements. Acceptable association was a priori considered as mean Kendall's τ-b coefficient (τ-b) ≥ 0.7. The subjects reported their experience of using Grasp in a purpose-made questionnaire. In total, 102 subjects were included, and 96 subjects (56 females) completed all three tests. The association of pain intensity reported by Grasp and NRS was moderate with a mean τ-b of 0.53 (95% confidence interval [CI] 0.47-0.58). The association between the repeated Grasp measurements was weak with a mean τ-b of 0.43 (95% CI 0.37-0.48). Most subjects reported that Grasp was intuitive and easy to use. Pain intensity reported by squeezing Grasp did not show acceptable association with pain intensity reported by NRS during CPTs. The association between pain intensity reported by Grasp during two CPTs on separate days was weak. Further improvements of the Grasp ball are needed before use in clinical settings.

Patient adherence and response time in electronic patient-reported outcomes: insights from three longitudinal clinical trials.

Patient-reported outcome measures (PROMs) are used to collect data on disease symptoms in support of clinical trial endpoints. Clinical studies can last a year or more, and the patients' adherence and response time to daily at-home questionnaires may vary significantly over time. The aim of this study was to understand patterns and changes in patients' completion of daily PROMs during longitudinal clinical studies. Data were collected from 1342 patients randomized into three respiratory clinical trials (NCT03401229, NCT03347279, and NCT03406078). PROMs were completed by patients using electronic handheld devices that collected the starting and completion times. A Bayesian generalized linear mixed-effects model was used to identify unbiased coefficients associated with PROM adherence and response time using patient, site, and calendar features as covariates. Adherence decreased over time after randomization, and the rate of decrease was higher in younger patients. The 14-day pre-randomization adherence was correlated with adherence throughout the study. Patients were also more adherent during working days compared to non-working days. Oldest patients took twice as long to complete PROMs throughout the study; however, the response time for all patients decreased during the first month of the study regardless of age. Response time increased 7days before and after the date of a scheduled clinic visit and when a patient-reported higher symptom burden. Detailed analyses of adherence and response time for daily PROMs in clinical trials can provide significant insights about trends of patient behavior in longitudinal clinical studies with high baseline adherence.

Electronic cigarettes for smoking cessation.

Electronic cigarettes for smoking cessation.

A Rail-To-Rail and Low Offset Novel Strongarm Comparator Circuit for Low Power Data Converter Architectures

With the rapid improvements in the design of advanced high performance communication receivers, hand-held electronic devices are in widespread usage for some time. These devices facilitate high speed and secured access to internet data. The demand for realizing a smart and better usage experience puts forth strict requirements on the design aspects of next-generation high speed low power complementary metal oxide semiconductor (CMOS) receiver design. One of the major modules in the implementation of high speed low power CMOS receiver device is the analog to digital converter (ADC) architecture. In the process of conversion from analog to digital signals, Quantization and sampling operations are vital and are realized using comparator circuits. The comparator design has a significant role in the design of data converter architecture. Several comparator architectures exist, but StrongARM topology is discussed and implemented in this work due to its negligible static power dissipation and rail to rail output voltages. The proposed novel comparator architecture is designed and simulated in 90nm CMOS process using Cadence Virtuoso tool and operated at supply voltage of VDD=1.5V, a clock frequency of 250MHz. Compared to the previous designs, the energy delay product was reduced by 8% which is an important observation to be observed for use in wireless sensor node applications.

Qualitative assessment of the suitability of the Dysphagia Symptom Questionnaire to monitor dysphagia in children aged 7–10 years with eosinophilic esophagitis

BackgroundThe Dysphagia Symptom Questionnaire (DSQ) is a patient-reported outcome measure that assesses the frequency and severity of dysphagia in patients with eosinophilic esophagitis (EoE); however, it has only been validated for use in patients with EoE aged 11–40 years. This study examined the content validity of the DSQ and its usability on an electronic handheld device in children aged 7–10 years with EoE.MethodsIn this qualitative, observational cohort study, participants were recruited to partake in two rounds of interviews. During visit 1, a cognitive interview examined EoE-associated concepts and the appropriateness of the DSQ for assessing dysphagia. Participants completed the DSQ daily for 2 weeks, and DSQ scores were calculated. After 2 weeks, a second interview assessed the usability of the DSQ on the electronic device and the burden associated with completing it daily.ResultsOverall, 16 participants were included (aged 7–8 years: n = 8; aged 9–10 years: n = 8); most were male (75%) and white (81%), and the mean (standard deviation [SD]) age was 8.4 (1.3) years. The most commonly reported EoE-associated concept was ‘trouble with swallowing’ (63% [10/16]). Most participants reported that the questions were ‘easy to complete’ and ‘relevant to someone with EoE and dysphagia’. Overall, participants reported understanding the questions and associated responses; however, further probing demonstrated inconsistent comprehension. Key challenging concepts included ‘solid food’, ‘trouble swallowing’, ‘vomit’, and ‘relief’; some participants also reported difficulty differentiating between pain levels (31% [4/13]). Most caregivers reported that their child had experienced dysphagia (94% [15/16]); however, mean (SD) DSQ scores over the study period were low (7.3 [7.4]), suggesting infrequent and mild dysphagia, or a lack of comprehension of the questions. Most participants reported that completing the DSQ on the electronic device was easy (93% [14/15]) and they would be willing to complete it for longer than 2 weeks (73% [11/15]).ConclusionsDifficulties with comprehension and comprehensiveness suggest that the DSQ may not be sufficiently comprehensive for use in all patients in this population, and wording/phrasing changes are required before use in a clinical trial setting.

Electronic Patient-Reported Outcomes in Hidradenitis Suppurativa: Content Validity and Usability of the Electronic Hidradenitis Suppurativa Symptom Daily Diary, Hidradenitis Suppurativa Symptom Questionnaire, and Hidradenitis Suppurativa Quality of Life Questionnaire

Background: Hidradenitis suppurativa (HS), a chronic skin condition that causes pain and physical dysfunction, can impact significantly on quality of life. Disease-specific tools have been designed to assess the impact of HS on patients, including the HS Symptom Daily Diary (HSSDD), the HS Symptom Questionnaire (HSSQ), and the HS Quality of Life (HiSQOL^©) questionnaire, which have been developed into electronic instruments (eHSSDD, eHSSQ, and eHiSQOL^©). Objectives: The objective of this study was to establish the content validity of the electronic version of the HSSDD and HSSQ, and the acceptability and usability of the HSSDD, HSSQ, and HiSQOL^©, using concept elicitation and cognitive debriefing interviews. Methods: This was a non-interventional qualitative video interview study involving participants aged ≥18 years with moderate to severe HS recruited from a single clinical site in the USA. Interviews gathered feedback on participants’ symptom experience, followed by training and completion of the eHSSDD, eHSSQ, and eHiSQOL^© questionnaires on electronic handheld devices. Participants were then interviewed on the content of the eHSSDD and eHSSQ and the acceptability and usability of all three instruments. Interviews were transcribed and qualitatively analysed. Results: Twenty participants with moderate to severe HS (median age: 41.5 [range: 20.0–64.0]; n = 16/20 female) were included. All participants found the eHSSDD, eHSSQ, and eHiSQOL^© instructions clear and described the instruments as “easy”, “simple” and “self-explanatory”. Overall understanding of individual items within the eHSSDD and eHSSQ was high; however, 6/20 participants had difficulty in understanding the average skin pain item in the eHSSDD. All participants were able to accurately recall their symptoms within the recall periods of the eHSSDD and eHSSQ, although 4/20 participants found the 24-h recall period of the eHSSDD limiting. Completion time was quick across all instruments, and usability was high, with the majority of participants reporting no difficulty in completing questionnaires on electronic devices. Conclusion: The concepts covered in the eHSSDD and eHSSQ are relevant and important to patients, supporting their content validity. The findings also provide evidence of acceptability and usability of the eHSSDD, eHSSQ, and eHiSQOL^©. A limitation was that all participants were recruited from a single site, which may have introduced selection bias and thus limited the generalisability of results.

Solvent-Solvent Interaction Mediated Lithium-Ion (De)intercalation Chemistry in Propylene Carbonate Based Electrolytes for Lithium-Sulfur Batteries.

Reversible lithium-ion (de)intercalation in the carbon-based anodes using ethylene carbonate (EC) based electrolytes has enabled the commercialization of lithium-ion batteries, allowing them to dominate the energy storage markets for hand-held electronic devices and electric vehicles. However, this issue always fails in propylene carbonate (PC) based electrolytes due to the cointercalation of Li+-PC. Herein, we report that a reversible Li+ (de)intercalation could be achieved by tuning the solvent-solvent interaction in a PC-based electrolyte containing a fluoroether. We study the existence of such previously unknown interactions mainly by nuclear magnetic resonance (NMR) spectroscopy, while the analysis reveals positive effects on the solvation structure and desolvation process. We have found that the fluoroether solvents interact with PC via their δ-F and δ+H atoms, respectively, leading to a reduced Li+-PC solvent interaction and effective Li+ desolvation followed by a successful Li+ intercalation at the graphite anodes. We also propose an interfacial model to interpret the varied electrolyte stability by the differences in the kinetic and thermodynamic properties of the Li+-solvent and Li+-solvent-anion complexes. Compared to the conventional strategies of tuning electrolyte concentration and/or adding additives, our discovery provides an opportunity to enhance the compatibility of PC-based electrolytes with the graphite anodes, which will enable the design of high-energy density batteries (e.g., Li-S battery) with better environmental adaptabilities.

Screening of atrial fibrillation in dental practices: a qualitative feasibility study

ABSTRACT Objectives To increase the detection of unknown atrial fibrillation (AF), general practitioners have started screening their patients using small hand-held devices. It is thought that dental settings could be utilized for screening as they have regular access to patients. The aim of this study was to explore the perceptions of dental staff of screening for AF using a hand-held electronic device in primary dental care. Methods The research took place in one large mixed NHS and private general dental practice. Views from staff including dentists, dental therapists, dental nurses, and managers were elicited via semi-structured interviews conducted face-to-face, audio recorded, and transcribed verbatim. Interviews continued until there were no new themes or patterns emerging from the data, and thematic saturation had been achieved. Results Eleven participants were interviewed. The main themes generated were methodology for screening, acceptability for screening within the practice, attitudes to screening, and implementation of screening. Overall, participants were positive about implementing AF screening in a dental practice but expressed concerns about time and remuneration. Staff also gave encouraging feedback regarding the simplicity of the portable screening device. Conclusions Participants felt that AF screening in primary care dental practices was a good concept but may be challenging to implement in NHS Dentistry, especially due to the pandemic.

The Relationship Between Use of Gadgets and Sleep Quality on Nursing Students

Introduction: The proliferation of information and communication technology, particularly handheld electronic devices, has resulted in a significant portion of the population becoming ensnared in a perpetual reliance on smartphones. The prevalence of technological devices has led to a significant dependency among students. Approximately 30 million individuals, constituting approximately 80% of the user population in Indonesia, are students. This behaviour frequently leads individuals to lose track of time during late hours, as they habitually resort to incessantly monitoring their electronic devices as a means of evading social interactions on online platforms. The objective of this study was to investigate the correlation between gadget usage and sleep quality. Methods: The present study employed a quantitative approach utilizing a cross-sectional design. This study employed comparative statistical analysis to examine the correlation between gadget usage and the sleep quality of students at STIKes Karsa Husada Garut. Results:: The data analysis using the Chi-square test yielded a p-value of less than 0.05, suggesting a significant association between the utilization of Gadgets and the quality of sleep among nursing students at STIKes Karsa Husada Garut. Conclusion: the utilization of electronic devices had a notable impact on the sleep quality of final-year students at STIKes Karsa Husada Garut. A negative correlation can be interpreted as indicating an inverse relationship between the use of gadgets and sleep quality, such that an increase in gadget usage is associated with a decrease in sleep quality and vice versa.

The Impact of Physical Activity on Adolescent Idiopathic Scoliosis.

The prevalence of adolescent idiopathic scoliosis (AIS) is increasing, partly due to a lack of physical activity. In a cross-sectional study with 18,216 pupils (5th, 6th, and 8th grades) from four Croatian counties using the forward bend test (FBT; presumed AIS), the prevalence of AIS and its correlation with physical activity were evaluated. Pupils with presumed AIS were less physically active than their peers without scoliosis (p < 0.001). Abnormal FBT was more prevalent among girls than boys (8.3% vs. 3.2%). Boys were more physically active than girls (p < 0.001). Pupils with presumed AIS were less physically active than their peers without scoliosis (p < 0.001). A higher prevalence of presumed AIS was found among inactive or just recreationally active schoolchildren than among those engaged in organized sports (p = 0.001), girls especially. Pupils with presumed AIS were less active and had fewer weekly sports sessions than their peers without scoliosis (p < 0.001). Notably low prevalence of AIS was detected among pupils engaged in soccer (2.8%, p < 0.001), handball (3.4%, p = 0.002), and martial arts (3.9%, p = 0.006), while it was higher than expected in swimming (8.6%, p = 0.012), dancing (7.7%, p = 0.024), and volleyball (8.2%, p = 0.001) participants. No difference was detected for other sports. A positive correlation was found between time spent using handheld electronic devices and the prevalence of scoliosis (rs = 0.06, p < 0.01). This study confirms the increasing prevalence of AIS, particularly among less athletic girls. Further, prospective studies in this field are required to explain whether the higher prevalence of AIS in these sports is due to referral or other aspects.

Neck and Upper Extremity Musculoskeletal Symptoms Secondary to Maladaptive Postures Caused by Cell Phones and Backpacks in School-Aged Children and Adolescents.

Technology is an essential part of our lives. Nowadays, it is almost impossible to leave the house without a cell phone. Despite the wide range of benefits of cell phones and handheld electronic devices, this evolution of technology has not come without a price. The pandemic of cell phone use among children and young adolescents has led to the emergence of a set of musculoskeletal (MSK) symptoms that have not been seen before in this age group. These symptoms can range from neck and shoulder discomfort to pain, peripheral neurological symptoms of the upper extremity, and long-term complications such as disk prolapse and degenerative disk disease of the cervical spine. This clinical presentation is known as "text neck syndrome." In addition to MSK symptoms, text neck syndrome could also include eye and ear symptoms, psychological problems, peripheral neurological symptoms, and poor academic performance. Multiple mechanisms have been discussed by which cell phone use causes MSK symptoms. Maladaptive postures, a decrease in physical activity leading to obesity, and the direct effect of electromagnetic radiation are some of the mechanisms by which long-term use of cell phones leads to the clinical presentation of text neck syndrome and its long-term consequences. The purpose of this article is to review the literature, discuss the epidemiology of cell phone use and MSK symptoms associated with its use in children and adolescents, describe its clinical presentation, explain the pathophysiology behind it, and provide preventative guidelines that can be used by this age group to allow for the continued use of these electronics without harmful effects on their posture and long-term health.

Privacy-preserving transfer learning-based secure quantum image retrieval in encrypted domain for cloud environment

Nowadays, the rapid growth of personal handheld electronic devices encourages the individual and organizations to upload their information to cloud for storage and processing purposes. To ensure privacy, the images are encrypted using cryptographic schemes that are outsourced to the cloud. Though images are encrypted, searching for similar images leads the cloud server to access the image data as it performs computation over plaintext. Thus, to ensure the privacy of the images during image retrieval, the proposed framework presents a transfer learning-based secure quantum image retrieval scheme over encrypted cloud. The confidentiality of the images is guaranteed by introducing quantum-based image encryption. Meanwhile, clustered image feature vectors are extracted through the transfer learning model and protected using secure multiparty computation. During retrieval, the proposed system introduces a similarity comparison model for performing computation on encrypted data. The experiments and performance analysis show the effectiveness and security of the proposed scheme.

The Pros and Cons of Use of Handheld Electronic Devices During Ward Rounds and the Impact of the COVID-19 Pandemic.

The exponential use of handheld electronic devices (HEDs) among healthcare providers has shown the potential to enhance clinical workflows and improve patient care. However, the challenges and risks of carrying these devices during ward rounds and their impact on postgraduate trainees' (PGTs') training in general and more specifically during the COVID-19 pandemic need to be explored. A cross-sectional mixed-methods online survey was conducted to evaluate the perceptions of trainees and faculty at Accreditation Council for Graduate Medical Education International accredited residency and fellowships programs in Qatar on the use of HEDs on clinical workflow, trainees' education, and the impact of the COVID-19 pandemic. One hundred and fifty-eight participants were enrolled in the study (87 postgraduate trainees and 71 faculty). Exploratory data analysis and descriptive statistics were performed using STATA version 12 and thematic analysis of 301 qualitative responses to the survey open-ended questions using Atlas. ti qualitative software, version 9.4.0. Almost all PGTs, 83 (95.4%), and faculty 43 (62.3%) use HEDs during ward rounds. Accessibility of patient information by PGTs 73 (94.8%) and faculty 46 (84.4%) and work efficiency were the main perceived benefits. Hindering communication between team members, disruption of interaction with patients, increased risk of infection and breach of patient confidentiality were among the challenges associated with their use. Carrying devices reduced the frequency of hand hygiene practices and physical examinations of patients by trainees. The COVID-19 pandemic led to a decrease in the use of HEDs by both faculty [38(64%)] and PGTs [42(60%)]. HEDs' use is valued by both faculty and PGTs in enhancing workflow, trainees' education, patient experience, and patient care during the COVID-19 pandemic. Graduate medical education leaders should adopt measures to monitor their use during ward rounds as they can negatively impact trainees' education, reduce interaction with patients, increase the risk of infection, and breach patient confidentiality.

A handheld electronic device with the potential to detect lung cancer biomarkers from exhaled breath.

Lung cancer is the leading cause of cancer death in the United States. It has the lowest 5-year survival rate among the most common cancers and therefore, early diagnosis is critical to improve the survival rate. In this paper, a new handheld electronic device is proposed to detect nine lung cancer biomarkers in the exhaled breath. An electrochemical gas sensor was produced through deposition of a thin layer of graphene and Prussian blue on a chromium-modified silicon substrate. Selective binding of the analyte was formed by molecular imprinting polymer (MIP). Subsequent polymerization and removal of the analyte yielded a layer of a conductive polymer on top of the sensor containing molecularly imprinted cavities selective for the target molecule. The sensors were tested over 1-20 parts per trillion (ppt) level of concentration while the sensor resistance has been monitored as the sensors react to the analyte by resistance change. Pentane sensor was also tested for selectivity. A printed circuit board was designed to measure the resistance of each sensor and send the data to a developed application in smartphone through Bluetooth. This handheld device has the potential to be used as a diagnostic method in the near future.

"Teaching Strategies with Necessary Adaptation for the Children with Hearing Impairment"

The current generations of learners, most of whom are digital natives, regularly consume engaging content via the internet, TV and handheld electronic devices. This norm changes the way children interact with content and understand information. To reach today's learners, educators must adapt their teaching practices and methods to include a variety of strategies that actively engage and genuinely reach learners in meaningful ways. The classroom is a dynamic environment, bringing together students from different backgrounds with various abilities and personalities. Being an effective teacher, therefore, requires the implementation of creative and innovative teaching strategies in order to meet students' individual needs Here are many types of the teaching strategies our educators as well as hearing impairment children use at different points of time to facilitate active participation and guide your children in their learning journeys. Teachers may use one or more of these methods as they choose the strategies that work best for their students, classrooms, curricula and objectives.

Electronic cigarettes for smoking cessation.

Electronic cigarettes for smoking cessation.

Fifty Years of Motor Vehicle Crashes in Saudi Arabia: A Way Forward

Introduction:This study involves an in-depth assessment of the state of traffic safety across the Kingdom of Saudi Arabia over the last fifty years.Methods:A comprehensive dataset of 59 published peer-reviewed journal articles, as well as 212 government reports and official statistics, was collated and critically assessed to determine major factors affecting traffic safety in the country.Results and Discussion:Results reveal that some traffic safety indicators are still showing worsening trends despite the great efforts to improve road safety in Saudi Arabia, while few other areas have either stabilized or started showing some improvements over recent years. Findings also show that human losses (estimated to be 4.7% among all mortalities) and economic losses (estimated to be as high as $16b annually) are significantly higher than developed and most developing countries. Contributing factors to the high losses include risky behaviors of drivers and road users, speeding, unrestrained seatbelts, use of handheld electronic devices and/or mobile phones, high motor vehicle ownership rate, and others.Conclusion:It can be concluded that various traffic safety indicators have been giving mixed signs in Saudi Arabia over the last fifty years, and a change in safety behavior among road users is needed along with new strategies to minimize motor vehicle crashes.

Diagnosing Non-Small Cell Lung Cancer by Exhaled Breath Profiling Using an Electronic Nose: A Multicenter Validation Study

Despite the potential of exhaled breath analysis of volatile organic compounds to diagnose lung cancer, clinical implementation has not been realized, partly due to the lack of validation studies. This study addressed two questions. First, can we simultaneously train and validate a prediction model to distinguish patients with non-small cell lung cancer from non-lung cancer subjects based on exhaled breath patterns? Second, does addition of clinical variables to exhaled breath data improve the diagnosis of lung cancer? In this multicenter study, subjects with non-small cell lung cancer and control subjects performed 5min of tidal breathing through the aeoNose, a handheld electronic nose device. A training cohort was used for developing a prediction model based on breath data, and a blinded cohort was used for validation. Multivariable logistic regression analysis was performed, including breath data and clinical variables, in which the formula and cutoff value for the probability of lung cancer were applied to the validation data. A total of 376 subjects formed the training set, and 199 subjects formed the validation set. The full training model (including exhaled breath data and clinical parameters from the training set) were combined in a multivariable logistic regression analysis, maintaining a cut off of 16%probability of lung cancer, resulting in a sensitivity of 95%, a specificity of 51%, and a negative predictive value of 94%; the area under the receiver-operating characteristic curve was 0.87. Performance of the prediction model on the validation cohort showed corresponding results with a sensitivity of 95%, a specificity of 49%, a negative predictive value of 94%, and an area under the receiver-operating characteristic curve of 0.86. Combining exhaled breath data and clinical variables in a multicenter, multi-device validation study can adequately distinguish patients with lung cancer from subjects without lung cancer in a noninvasive manner. This study paves the way to implement exhaled breath analysis in the daily practice of diagnosing lung cancer. The Netherlands Trial Register; No.: NL7025; URL: https://trialregister.nl/trial/7025.

Free fall drop impact analysis of board level electronic packages

The electronic failure from accidental dropping event of modern handheld electronic devices may result from various failure modes such as cracking of PCB, solder joint etc. In this work, the dynamic response characteristics of electronic packages when subjected to board level drop impacts are investigated. Initially, board level drop tests are conducted on a custom made PCB as per JEDEC standard using a drop test apparatus. A Finite Element model of the free fall drop phenomenon is developed and numerical simulation is carried out using ANSYS 16.0 software based on two simplified Finite Element (FE) methods (Input-G method and Support Excitation Scheme) reported in the literatures are compared with experimental results to identify the most suitable FE method in terms of accuracy of the results produced. Using the identified FE method, the dynamic responses of PCBs with three different support configurations commonly used are analyzed to identify the best possible support configuration that can with stand drop impact loads better.

Consistency Evaluation of Two Loading Devices in Measuring the Perception of Dyspnea.

PurposeThis study aimed to assess the consistency of hand-held electronic incremental threshold loading device (I-TLD) and traditional constant threshold loading device (C-TLD) in measuring the perception of dyspnea (POD) in humans.Patients and methodsThirty-eight patients with stable chronic obstructive pulmonary disease (COPD) and 41 non-COPD subjects were recruited for the study, all of whom were subjected to an external loading breathing test by gradually increasing the inspiratory load starting from 0 to 5, 10, 20, and 30 cmH2O oral pressure using I-TLD and C-TLD. The Borg score measurement was performed immediately after the loading breath of each level. The linear regression slope a of Borg scores vs percentage of oral pressure from the patients’ maximum represented patients’ POD. The consistency of POD measured by the two devices was analyzed by two Related Samples Wilcoxon test, Spearman correlation analysis, and Bland-Altman analysis.ResultsThere was no significant difference in slope a measured by the two devices in all subjects. The Spearman correlation analysis revealed that the slope a measured by the two devices in the inspiratory loading breath test had a significant correlation: in COPD patients, r = 0.678, (p < 0.001) and in non-COPD subjects, r = 0.603, (p < 0.001). For the results of the Bland-Altman analysis of the whole subjects, 3.8% (3/79) points were outside of the 95% LoA confidence interval (CI) (−10.380, 9.457), and the LoA CI was acceptable, which depicted that the two devices were consistent in their estimation.ConclusionI-TLD was consistent with C-TLD in measuring POD in COPD patients and non-COPD subjects. I-TLD may be used as an alternative method to replace C-TLD to measure POD in COPD patients and non-COPD subjects.