Table 2.

Independent associations between screen time and physical activity and AIS.

Variables	AIS
	OR (95% CI)	aOR (95% CI)	Model 1, aOR (95% CI)
Screen time
<2 h/day	1.00 (reference)	1.00 (reference)	1.00 (reference)
≥2 h/day	3.08 (2.18–4.35)*	3.40 (2.35–4.93)*	3.40 (2.33–4.96)*
MVPA
≥60 min/day of MVPA	1.00 (reference)	1.00 (reference)	1.00 (reference)
<60 min/day of MVPA	1.76 (1.33–2.32)*	1.76 (1.32–2.35)*	1.85 (1.37–2.51)*
Inactive	2.16 (1.55–3.01)*	2.14 (1.51–3.03)*	2.20 (1.53–3.15)*

OR: crude odds ratio.

aOR: model was adjusted for family history of scoliosis, education level of father, education level of mother and BMI.

Model 1 with AIS as dependent variables and both screen time and MVPA as independent variables, adjusted for family history of scoliosis, education level of father, education level of mother and BMI.

Abbreviations: OR, odds ratio; CI; confidence interval; aOR, adjusted odds ratio; MVPA, moderate-vigorous physical activity.

*P-value < 0.05.