Table 2

Patient Knowledge of Personal Risk of Melanoma and of Melanoma Risk Factors

Measure	Intervention Group (n = 97)	Control Group (n = 76)	Covariance Cluster Effect Estimates	Covariance SD	Unadjusted P Value	Adjusted P Value^a
Correctly knew they had an elevated risk of melanoma, No. (%) [95% CI]	69 (71.1) [61.1–79.9]	32 (42.1) [30.9–54.0]	−0.010	0.038	.001	.002
Correctly identified melanoma risk factors, No. (%) [95% CI]
Having >20 moles on the 2 arms	76 (78.4) [68.8–86.1]	48 (63.2) [51.3–73.9]	0.002	0.045	.045	.085
Having freckles	62 (63.9) [53.5–73.4]	34 (44.7) [33.3–56.6]	−0.016	0.033	.017	.038
Having phototype 1 or 2	90 (92.8) [85.7–97.1]	55 (72.4) [60.9–82.0]	−0.003	0.039	.003	.005
Having been sunburned during childhood	90 (92.8) [85.7–97.1]	61 (80.3) [69.5–88.5]	−0.030	0.025	.011	.053
Having lived for more than a year in a country with strong sunshine	77 (79.4) [70.0–86.9]	58 (76.3) [65.2–85.3]	0.011	0.048	.65	.97
Having a family history of melanoma	62 (63.9) [53.5–73.4]	32 (42.1) [30.9–54.0]	−0.006	0.034	.01	.006
Overall knowledge score,^b mean (SD)	4.71 (1.33)	3.79 (1.50)	1.47 e^−08c	0.0001	.007	.002

↵a Multivariate model adjusted for age, sex, and education level.
↵b Possible scores ranged from 0 to 6, with higher scores indicating greater knowledge.
c Mixed model.