Multilevel Analysis Of Cross-sectional Data Research Articles

Intention to use contraceptives among married and cohabiting women in sub-Saharan Africa: a multilevel analysis of cross-sectional data

ObjectiveTo examine the factors associated with intention to use contraceptives among married and cohabiting women in sub-Saharan Africa (SSA).DesignData for the study were extracted from the most recent Demographic and...

Age differences in the association of childhood obesity with area-level and school-level deprivation: cross-classified multilevel analysis of cross-sectional data

Evidence suggests that area-level deprivation is associated with obesity independently of individual socioeconomic status; however, although the school may also have an impact on child health, few studies have investigated the association between school-level deprivation and the body mass index (BMI) of students. The aim of this study was to assess the relationship between the BMI for children of different ages and area-level and school-level deprivation. BMI measurements were collected through the National Child Measurement Programme (NCMP) that samples from two school years: 396,171 reception year pupils (4-5-year olds) and 392,344 year 6 pupils (10-11-year olds) from 14,054 primary schools in England. Cross-classified multilevel models with four levels: individual (n=788,525), lower super output areas corresponding to area of residence (n=29,606), schools (n=14,054) and primary care trusts (PCTs, n=143), which coordinate the collection of data within a large area, were used to study the relationship between measures of deprivation at an area and school level, and childhood BMI within England. A positive association was found between the area and school measures of deprivation, and student BMI. Both the measures of deprivation explained a greater proportion of variance in BMI z-scores for year 6 students than for the reception year students, with a greater difference between the year groups found with the school-level measure of socioeconomic status than for the the area-level measure. Deprivation explains a greater proportion of the variance in BMI for older compared with younger children, perhaps reflecting the impact of deprivation as children age, highlighting the widening of health inequalities through childhood. The association with school-level deprivation illustrates the impact of the school on BMI status throughout the primary school years.

Brief report: Multilevel analysis of school smoking policy and pupil smoking behaviour in Wales

A multilevel analysis of cross-sectional data from a survey involving 1941 pupils (in grades 10 and 11) and policy indicators developed from interviews with staff from 45 secondary schools in Wales examined the hypotheses that pupil smoking prevalence would be associated with: restrictive staff and pupil smoking policies; dissemination of school smoking policies; and implementation of smoking policies in the context of a health promoting whole school environment. The only statistically significant association found was that pupils attending schools that did not disseminate pupil smoking policy in a written document had a greater tendency (OR = 2.16, 95% CI 1.13–4.10) to smoke daily on school premises than those who attended schools that disseminated policy through a written document. This association was not significant ( p < 0.05) when pupil level covariates were included. Further research is required to identify the effectiveness and optimal content, enforcement and support of school smoking policies.

School smoking policies and smoking prevalence among adolescents: multilevel analysis of cross-sectional data from Wales

OBJECTIVETo examine the association between school smoking policies and smoking prevalence among pupils.DESIGNMultilevel analysis of cross-sectional data from surveys of schools and pupils.SETTING55 secondary schools in Wales.SUBJECTS55 teachers and 1375...