Table 5.

Primary prevention outcome measures among children of participants at baseline and post-intervention and intervention effects by the parent’s MC1R risk category.

	Standard arm			Precision prevention arm			Intervention effecta
Outcome	Baseline	Post-interventionb	P-valuec	Baseline	Post-interventionb	P-valuec	Beta/ Odds Ratio	Type III P-value
	MC1R average-risk
	n = 26			n = 27
Continuous outcomesd
Weekday hours	1.48	1.33	0.09	1.49	1.04	0.12	0.34	0.43
Weekend hours	1.80	1.56	0.18	2.18	0.44	0.0006	−1.08	0.38
Sun Protection Behaviors	1.44	1.21	0.82	1.51	1.68	0.48	−0.51	0.42
Sunburns	0.53	0.53	0.13	0.54	−0.44	0.14	0.04	0.70
Outdoor intentional tanning	1.43	0.93	0.15	1.39	1.64	0.01	0.35	0.14
Binary outcomese
Wearing a hat often or alwaysi	0.04	0.00	--	0.04	0.00	--	--	--
Seeking shade or using umbrella often or alwaysf	0.16	0.37	0.21	0.30	0.46	0.33	2.27	0.70
Wearing a shirt with sleeves often or alwaysi	0.65	1.00	--	0.71	0.71	--	--	--
Wearing sunglasses often or alwaysi	0.04	0.00	--	0.07	0.08	--	--	--
Wearing sunscreen often or alwaysi	0.31	0.20	--	0.32	0.27	--	--	--
	MC1R higher-risk
	n = 31			n = 41
Continuous outcomesd
Weekday hours	1.73	2.46	0.08	1.53	0.90	0.02	−0.94	0.005
Weekend hoursg	1.87	2.18	0.32	1.88	0.84	0.02	−1.15	0.05
Sun Protection behaviorsg	1.50	1.13	0.03	1.55	1.98	0.16	0.93	0.02
Sunburns	0.29	1.21	0.13	0.20	−0.07	0.04	−0.55	0.06
Outdoor intentional tanningg	1.24	1.35	0.41	1.22	1.06	0.23	0.12	0.34
Binary outcomese
Wearing a hat often or alwaysi	0.06	0.08	--	0.17	6.36	--	--	--
Seeking shade or using umbrella often or always	0.32	0.52	0.66	0.32	0.46	0.32	1.22	0.87
Wearing a shirt with sleeves often or alwaysf	0.61	0.62	0.86	0.68	0.69	0.96	1.06	0.94
Wearing sunglasses often or alwaysi	0.06	0.00	--	0.05	0.17	--	--	--
Wearing sunscreen often or always	0.32	0.29	0.79	0.39	0.36	0.80	2.38	0.41

^aIntervention effect compares the post-intervention measure in the intervention arm to that in the standard arm, after adjusting for baseline outcome, season, predictors of missingness, and predictors of the outcome.

^bPost-intervention is the average of outcome measures obtained at the 3- and 9-month assessments.

^cWithin arm p-values are from tests comparing post-intervention measures to baseline averages from a GEE model containing baseline, 3- and 9-month outcomes as the dependent variables.

^dBaseline and post-intervention values are population predicted marginal means, while the intervention effects are beta-coefficients.

^eBaseline and post-intervention values are population predicted marginal proportions, while the intervention effects are reported as odds ratios (ORs).

^fDue to sparse data, unadjusted values are presented.

^gDue to sparse data, within-arm estimates were modeled without missingness predictors.

^hDue to sparse data, all estimates were modeled without missingness predictors.

ⁱDue to sparse data, raw proportions are presented.