Table 2.

Standardized incidence ratios of the number of melanoma cases observed in the first 10 years of follow-up in the second half of the testing data compared with the expected number using 10-year risk

	Observed	Expected	Standardized incidence ratio	95% confidence interval
Overall	306	256.47	1.193	[1.067–1.335]
Quintile of risk
1	22	23.23	0.947	[0.624–1.439]
2	32	34.69	0.922	[0.652–1.304]
3	54	44.95	1.201	[0.920–1.568]
4	58	58.88	0.985	[0.762–1.274]
5	140	94.71	1.478	[1.253–1.745]