Skip to main content

Table 2 Associations of children’s characteristics with ≥2 h daily TV viewing (95% CI)

From: Increasing socioeconomic disparities in sedentary behaviors in Chinese children

Characteristics Annual percentage changea Crude OR Model Ib AOR Model IIc
AOR for academic year ROR for the interaction with academic years
Academic year 0.976 (0.974,0.977)** 0.971 (0.969,0.972)**
Sex
 Girls −1.03(−1.24,-0.82)** 1 1 0.971 (0.969,0.974)** 1
 Boys −1.04(−1.36,-0.71)** 1.116 (1.106,1.125)** 1.133 (1.123,1.143)** 0.968 (0.965,0.971)** 0.996 (0.993,0.999)*
Grade
 Primary 4 −0.84(− 1.18,-0.49)** 1 1 0.978 (0.975,0.980)** 1
 Primary 6 −1.26(− 1.52,-1.00)** 1.507 (1.497,1.517)** 1.559 (1.548,1.570)** 0.962 (0.959,0.964)** 0.984 (0.981,0.986)**
Highest parental education
 Tertiary −0.92(−1.11,-0.72)** 1 1 0.959 (0.954,0.963)** 1
 Secondary −0.70(− 0.98,-0.43)** 2.336 (2.305,2.367)** 1.726 (1.699,1.753)** 0.970 (0.968,0.973)** 1.012 (1.007,1.018)**
 Primary/below −0.40(− 0.58,-0.22)** 3.450 (3.394,3.508)** 2.251 (2.207,2.295)** 0.980 (0.976,0.984)** 1.022 (1.015,1.029)**
Highest parental occupation
 Managerial/professional −1.28(−1.49,-1.07)** 1 1 0.964 (0.961,0.968)** 1
 Clerical/service −0.87(−1.13,-0.60)** 1.776 (1.756,1.797)** 1.393 (1.375,1.412)** 0.970 (0.967,0.973)** 1.006 (1.002,1.011)*
 Manual job −0.74(−1.01,-0.47)** 2.173 (2.148,2.199)** 1.534 (1.513,1.556)** 0.974 (0.971,0.977)** 1.010 (1.006,1.015)**
 Unemployed −0.72(− 0.97,-0.47)** 2.427 (2.378,2.477)** 1.707 (1.670,1.746)** 0.971 (0.964,0.977)** 1.006 (0.999,1.014)
  1. aTests for trend by Cochran-Armitage trend tests. bModel I included the linear term of academic years and the main effects of sex, grade, highest parental education and occupation, adjusting for weight status and frequency and duration of extracurricular physical activities. cModel II included the variables in Model I and their interactions with academic years. CI Confidence interval, AOR Adjusted odds ratio, ROR Ratios of odds ratios, ROR > 1 indicates that the difference between groups increases over the years. *P-value < 0.01, **P-value < 0.001