Table 5. Odds ratios for covariates predicting changes of physical activity.

		Time 2 Physical activity profiles
Predictors	Time 1 Physical activity profiles	Inactives	Low activies	Moderate activies	Activies
		OR [95%CI]	OR [95%CI]	OR [95%CI]	OR [95%CI]
Gender	Inactives	ref	0.67 [0.32, 1.41]	1.18 [0.49, 2.84]	0.68 [0.13, 3.49]
	Activies	1.80 [0.21, 15.10]	0.56 [0.07, 4.70]	0.15 [0.01, 1.73]	ref
Residence	Inactives	ref	0.58 [0.22, 1.50]	0.49 [0.16, 1.50]	0.32 [0.07, 1.43]
	Activies	1.88 [1.13, 26.32]	1.50 [0.11, 20.30]	1.88 [0.13, 26.32]	ref
PEL	Inactives	ref	1.38 [1.07, 1.79] *	1.67 [1.22, 2.28] ***	1.70 [0.88, 3.27]
	Activies	1.06 [0.43, 2.60]	0.70 [0.31, 1.59]	2.63 [0.91, 7.61]	ref
BMI	Inactives	ref	1.09 [0.99, 1.19]	1.04 [0.92, 1.18]	1.06 [0.86, 1.30]
	Activies	1.01 [0.84, 1.21]	0.87 [0.63, 1.21]	0.84 [0.62, 1.14]	ref
SE	Inactives	ref	1.63 [1.06, 2.51] *	1.10 [0.70, 1.74]	4.45 [1.61, 12.28] **
	Activies	0.11 [0.03, 0.44] **	1.17 [.89, 1.54]	0.17 [0.05, 0.64] **	ref
BSB	Inactives	ref	0.78 [0.52, 1.17]	1.17 [0.69, 1.98]	0.97 [0.40, 2.33]
	Activies	1.31 [0.44, 3.92]	.89 [.68, 1.18]	1.58 [0.53, 4.68]	ref
PS	Inactives	ref	0.93 [0.63, 1.36]	0.64 [0.41, 1.01]	1.18 [0.53, 2.63]
	Activies	0.36 [0.11, 1.14]	0.07 [0.01, 0.47] **	0.54 [0.18, 1.62]	ref

Note. PEL = Parental education level; SE = Self-efficacy; BSB = Body shape-based belief; PS = Peer support, Ref = Reference class; Gender coded as 0 = boy and 1 = girl; Residence coded as 0 = urban and 1 = rural

*p < 0.05

**p < 0.01

***p < 0.001.