Additional file 1 Results of multinomial logit model examining preadolescent factors related to ESPE trajectories using complete data created by multiple imputation analysis
Males (n=1075) 1. Often-rarely / 2. Rarely-Never 3. Always-Never / 2. Rarely-Never 4. Always / 2. Rarely-Never Factors OR 95% C. I. OR 95% C. I. OR 95% C. I. Individual factors
Body Mass Index 1.043 ( 0.992 - 1.097 ) 0.979 ( 0.925 - 1.037 ) 1.039 ( 0.984 - 1.096 ) Body dissatisfaction 0.900 ( 0.834 - 0.972 ) * 0.885 ( 0.814 - 0.962 ) * 0.832 ( 0.766 - 0.903 ) * Stress 0.993 ( 0.956 - 1.032 ) 0.953 ( 0.913 - 0.996 ) * 0.961 ( 0.921 - 1.003 ) Screen behavior 0.841 ( 0.733 - 0.965 ) * 1.184 ( 1.021 - 1.373 ) * 0.907 ( 0.786 - 1.046 ) Parental Factors
Parental exercise
Regular / unregularly or no exercise 1.774 ( 1.200 - 2.622 ) * 1.863 ( 1.207 - 2.875 ) * 1.847 ( 1.227 - 2.781 ) * Parental screen behavior 0.946 ( 0.824 - 1.086 ) 1.028 ( 0.882 - 1.198 ) 1.064 ( 0.920 - 1.230 )
Females (n=997) 1. Always-Rarely / 2. Rarely-Never 3. Always/ 2. Rarely-Never 4. Rarely/ 2. Rarely-Never Factors OR 95% C. I. OR 95% C. I. OR 95% C. I. Individual factors
Body Mass Index 1.077 ( 1.015 - 1.141 ) * 1.179 ( 1.089 - 1.277 ) * 1.081 ( 1.014 - 1.152 ) * Body dissatisfaction 0.946 ( 0.877 - 1.021 ) 0.837 ( 0.751 - 0.933 ) * 0.897 ( 0.827 - 0.972 ) *
Stress 0.988 ( 0.952 - 1.024 ) 1.007 ( 0.952 - 1.064 ) 1.005 ( 0.964 - 1.047 )
Screen behavior 0.714 ( 0.608 - .838 ) * 0.937 ( 0.751 - 1.168 ) 0.830 ( 0.698 - 0.986 ) * Parental Factors
Parental exercise
Regular / unregularly or no exercise 1.173 ( 0.840 - 1.637 ) 1.143 ( 0.688 - 1.900 ) 1.073 ( 0.746 - 1.542 ) Parental screen behavior 1.013 ( 0.894 - 1.149 ) 1.212 ( 1.012 - 1.450 ) * 1.006 ( 0.876 - 1.155 ) The multinomial logistic model used “Rarely-Never” class as a reference group. Parental highest education, family monthly income, and parental marital status were controlled in the model.
ESPE: extracurricular sport participation and exercise *: p < .05, OR: Odds Ration, C.I.: Confidence Interval