Table 2.

Estimates for differences between intervention and control groups and mean ratings, standard errors, and sample sizes by condition on continuous measures of self-reported sun protection behavior.

Variable	Control	Intervention	Estimate	pvalue	Effect size
Frequency ratings on sun protection when outside for > 15 minutes in past month:
I stayed in the shade:	3.20	3.00	0.20	0.0189	0.23
	0.054	0.052	0.071
	774	902
I wore a hat	3.81	3.67	0.15	0.0607	0.18
	0.053	0.051	0.070
	769	915
I applied sunscreen with SPF ≥ 15	3.59	3.49	0.10	0.1961	0.10
	0.056	0.054	0.075
	789	938
I wore clothes covering most of my body	3.27	3.23	0.04	0.4860	0.04
	0.043	0.041	0.059
	790	940
I limited my time in sun during midday	3.70	3.56	0.14	0.1223	0.12
	0.042	0.039	0.058
	764	910
I wore sunglasses	3.77	3.69	0.08	0.2405	0.08
	0.050	0.048	0.069
	774	918
Behavior composite (α =0.43) (mean of above 6 items)	3.56	3.43	0.13	0.0035	0.24
	0.021	0.020	0.029
	792	944
Sun protection diary reports:
Amount of time outside during lunch Yesterday	3.45	3.13	0.32	0.3912	0.18
	0.294	0.293	0.360
	784	935
Amount of time outside during PE yesterday	2.72	2.50	0.22	0.6280	0.09
	0.370	0.368	0.453
	759	883
Amount of time outside during recess Yesterday	1.88	2.03	−0.15	0.4855	0.10
	0.166	0.165	0.208
	750	876
Total body coverage score during lunch	8.75	8.91	−0.15	0.5687	0.08
	0.182	0.185	0.260
	435	472
Total body coverage score during physical education class	7.10	9.34	−2.23	0.2430	0.85
	1.256	0.996	1.450
	27	76
Total body coverage score during recess	8.90	8.86	0.036	0.9275	0.02
	0.240	0.197	0.311
	114	137
Reports on sun exposure in the past month:
Lay out in the sun to get a tan	1.88	1.75	0.13	0.0974	0.14
	0.049	0.047	0.066
	784	930
Use a self-tanning cream	1.32	1.31	0.01	0.9129	0.01
	0.040	0.038	0.054
	789	931
Get sunburned	0.48	0.42	0.06	0.4222	0.06
	0.047	0.045	0.065
	683	779
Other sun protection reports:
SPF of sunscreen used in past month	28.76	27.28	1.48	0.2035	0.15
	0.84	0.82	1.11
	356	432