Neighborhood-level socioeconomic factors moderate the association between physical activity and relative age effect: a cross-sectional survey study with Japanese adolescents

Table 3 The neighborhood-level characteristics of the participating schools in this study (48 schools)

	Model 1 OR(95%CI)	Model 2a OR(95%CI)	Model 2b OR(95%CI)	Model 2c OR(95%CI)
Fixed effects
Intercept	3.08 (2.31–4.10)**	3.08 (2.30–4.12)**	3.13 (2.29–4.28)**	3.11 (2.32–4.16)**
Birth month	0.90 (0.82–0.97)*	0.90 (0.23–0.97)*	0.90 (0.83–0.98)*	0.90 (0.82–0.98)*
Socioeconomic factor
Areal deprivation		1.00 (0.99–1.01)
Average annual income			1.00 (0.99–1.01)
Education level				1.01 (0.96–1.06)

OR odds ratio, 95%CI 95% confidence interval
Model 1: Only birth month was considered. No socioeconomic factor was added
Model 2: Birth month and one socioeconomic factor(Model 2a: Areal deprivation, Model 2b: Average annual income, Model 2c: Education level)
All models were adjusted for age, body weight, population density
^*p < 0.05, **p < 0.01, Interclass correlation coefficients = 0.14, Design effect = 12.72

ISSN: 1471-2458