Are Sports-Related Factors Correlated to the Prevalence and Initiation of Illicit Drug Misuse in Adolescence? Prospective Study in Older Adolescents

Table 2

Correlates of illicit drug usage at baseline and follow-up, and initiation of illicit drug use during the study course.

	Baseline		Follow-up		Initiation
	OR		OR		OR
	(95 CI)		(95 CI)		(95 CI)
	Crude	Adjusted	Crude	Adjusted	Crude	Adjusted
Individual sport participation
Yes, still participating	1.18	1.26	1.10	1.07	4.89	3.99
	(0.35-3.94)	(0.37-4.35)	(0.37-3.29)	(0.33-3.46)	(1.19-20.07)	(0.90-17.68)
Quit	3.08	4.22	1.41	1.44	3.42	3.28
	(1.04-9.15)	(1.28-13.94)	(0.61-3.23)	(0.60-3.43)	(0.87-13.50)	(0.80-13.26)
Never	REF	REF	REF	REF	REF	REF
Team sport participation
Yes, participating	1.20	1.69	1.07	0.95	2.19	1.49
	(0.40-3.58)	(0.52-5.52)	(0.35-3.29)	(0.29-3.15)	(0.48-10.02)	(0.30-7.43)
Quit	0.55	0.64	1.50	1.42	2.75	2.16
	(0.17-1.73)	(0.20-2.08)	(0.64-3.53)	(0.58-3.48)	(0.73-10.38)	(0.55-8.53)
Never	REF	REF	REF	REF	REF	REF
Sport success/result	1.84	1.84	1.22	1.15	2.02	1.84
	(1.09-3.37)	(1.02-3.32)	(0.73-2.02)	(0.67-1.97)	(1.05-3.91)	(0.95-3.73)
Experience in sport	1.34	1.60	1.64	1.70	1.92	1.78
	(0.88-2.05)	(1.01-2.53)	(1.21-2.41)	(1.12-2.58)	(1.14-3.24)	(1.02-3.12)
Number of training sessions per week	1.21	1.50	1.21	1.23	1.79	1.61
	(0.76-1.94)	(0.88-2.57)	(0.85-1.76)	(0.81-1.87)	(1.07-3.01)	(0.91-2.85)

REF, referent value, Crude, nonadjusted logistic regression, Adjusted, logistic regression adjusted for age, gender, socioeconomic status, and conflict with parents, , denotes variables observed as continuous for the purpose of logistic regression calculations, , variable where only former and current athletes were observed, and , participants who were users of illicit drugs at study baseline were not included in this analysis.