. 2025 Apr 22;27:e69425. doi: 10.2196/69425

Table 3.

Estimated effects of LIFE4YOUth intervention on primary outcomes.

Primary outcomes			Complete case analysis^a							Imputed analysis^a
			Estimate^b (95% CI)		Probability of effect, %		P value^c		Estimate^b (95% CI)			Probability of effect, %		P value^c
2-month follow-up^d
	Weekly alcohol consumption^e	0.69 (0.27 to 1.83)		77.2		.54		0.58 (0.22 to 1.54)			86.2		.39
	Heavy episodic drinking^e	0.77 (0.55 to 1.07)		93.6		.14		0.79 (0.56 to 1.11)			91.5		.19
	Fruit and vegetables^e	0.32 (0.13 to 0.52)		99.9		.001		0.33 (0.12 to 0.53)			99.9		.002
	Sugary drinks consumed^e	0.89 (0.73 to 1.1)		85.9		.29		0.89 (0.72 to 1.1)			85.2		.30
	MVPA^e	50.1 (–0.2 to 99.7)		97.4		.05		50.0 (–4.6 to 105.9)			96.4		.08
	Smoking abstinence^e	1.09 (0.34 to 3.64)		56.3		.88		1.56 (0.45 to 5.35)			76		.25
4-month follow-up^d
	Weekly alcohol consumption^e	0.83 (0.32 to 2.22)		64.2		.90		0.84 (0.32 to 2.19)			63.8		.89
	Heavy episodic drinking^e	0.87 (0.6 to 1.25)		77.1		.49		0.79 (0.55 to 1.13)			90		.22
	Fruit and vegetables^e	0.11 (–0.1 to 0.32)		84.2		.32		0.12 (–0.1 to 0.35)			86.4		.28
	Sugary drinks consumed^e	0.88 (0.7 to 1.1)		87.4		.27		0.89 (0.71 to 1.11)			84.3		.32
	MVPA^e	50 (–5.7 to 104.9)		96.1		.08		40.8 (–21.5 to 103.3)			90		.20
	Smoking abstinence^e	1.38 (0.35 to 5.8)		68		.77		1.35 (0.32 to 5.76)			66-		.67

^aNegative binomial regression for weekly alcohol consumption, heavy episodic drinking, and consumption of sugary drinks; linear regression for fruit and vegetable consumption, and MVPA; logistic regression for smoking abstinence. Regression models adjusted for baseline values of age, sex, household economy (“Not so good” and “Not good at al” pooled), and psychosocial variables (ie, self-perceived importance, confidence, and know-how to change behaviors).

^bIncidence rate ratios for weekly alcohol consumption, heavy episodic drinking, and consumption of sugary drinks; odds ratios for smoking abstinence; and mean values for fruit and vegetable consumption and MVPA. CI: compatibility intervals, defined by the 2.5 and 97.5 percentiles of the posterior distribution.

^cConfidence intervals for null-hypothesis testing are shown in Table S1 in Multimedia Appendix 6.

^dAmong participants at-risk for the behavior at baseline (weekly alcohol consumption: n=46, heavy episodic drinking: n=338, fruit and vegetables: n=738, sugary drinks: n=469, MVPA=527, and cigarette smoking: n=140).

^eNumber of weekly standard drinks (12 g pure alcohol), monthly frequency of heavy episodic drinking (ie, ≥4 standard drinks), number of daily portions (100 g) of fruit and vegetables consumed, number of weekly sugary drinks (33 cL) consumed, weekly time spent in MVPA (minutes), and 4-week point prevalence of smoking abstinence.