Overweight and lower age at menarche: evidence from the Italian HBSC cross-sectional survey

BMC Women's Health

Table 3 Linear regression analysis for regional-level median age at menarche among 15-year-olds in 2013/2014

Model		Unstandardized regression coefficient	95% CI
1. 15-year-old girls 2013/2014	Region-level prevalence of overweight (%)	−0.33	− 0.50 to − 0.15
1. 15-year-old girls 2013/2014	Constant	155.18	152.55 to 157.82
2. 11-year-old girls 2009/2010	Region-level prevalence of overweight (%)	0.006	−0.19 to 0.21
2. 11-year-old girls 2009/2010	Constant	131.22	124.94 to 137.49

Region-level median age at menarche is measured in months; region-level of overweight is measured in percent
Model 1: Independent variable: prevalence of overweight among 15-year-olds (2013/2014), N = 21 regions, p = 0.001
Model 2: Independent variable: prevalence of overweight among 11-year-olds (2009/2010), N = 19 regions, p = 0.95
CI confidence interval
Data source: HBSC 2013/2014, HBSC 2009/2010

ISSN: 1472-6874