Table 4.

Multivariate associations between predictor variables and patterns of physical activity participation during adolescence

	Persistent Inactivity vs PA, DP, IP (n = 591)			Declining Participation vs PA, IP (n = 389)			Persistent Activity vs DP, IP, PI (n = 569)
Variables	OR	95% CI	p-value	OR	95% CI	p-value	OR	95% CI	p-value
Childhood measures
Socioeconomic status a	1.01	0.85–1.21	0.87	-	-	-	1.06	0.85–1.33	0.60
Family Active Rec. Orient.b	0.78	0.64–0.95	0.01	-	-	-	1.20	0.94–1.53	0.15
Home activitiesc	0.94	0.78–1.14	0.54	0.80	0.63–1.00	0.05	1.24	0.98–1.57	0.08
Childhood motor abilityd	-	-	-	-	-	-	1.17	0.90–1.52	0.24
IQe	-	-	-	-	-	-	1.03	0.80–1.32	0.84
Contemporaneous measures
Parent health
not very good	1.46	0.97–2.18	0.07	1.43	0.87–2.36	0.16	0.60	0.35–1.02	0.06
very good	1.00			1.00			1.00
VO2maxf	0.77	0.62–0.96	0.02	0.92	0.74–1.14	0.45	1.40	1.13–1.75	<0.01
General health
not very good	1.50	1.04–2.16	0.03	1.26	0.82–1.93	0.29	0.72	0.47–1.11	0.13
very good	1.00			1.00			1.00
Television viewingg	1.05	0.87–1.27	0.59	-	-	-	0.78	0.61–1.00	0.05
Tobacco smoking
smoker	-	-	-	1.35	0.74–2.45	0.33	-	-	-
non-smoker	-	-	-	1.00			-	-	-

Key

PI: Persistent Inactivity

PA: Persistent Activity

DP: Declining Participation

IP: Increasing Participation

CI: Confidence Interval

OR: Odds Ratio n: number remaining in each multivariate model

All analyses controlled for sex

Table notes: Reference groups

^aHigher SES

^bLower Family Active Recreation Orientation scores

^cFewer Home Activities

^dLower motor ability scores

^eHigher IQ scores

^fLower Predicted VO₂max scores

^gGreater time spent Television viewing