Prevalence of inherited ichthyosis in France: a study using capture-recapture method

Table 3 Estimated numbers of patients and estimated capture probabilities by individual covariates

Individual covariate	Numbers of recorded patients	Estimated number of patients^*	95% CI	Estimated capture probability^*
Age
Under 15 years	42	58	[49–79]	72%
Older than 15 years	74	133	[102–197]	56%
Severity grade
Grade 1 (mild)	40	79	[55–141]	50%
Grade 2 (moderate)	40	67	[51–107]	59%
Grade 3 (severe)	26	34	[28–49]	77%
Grade 4 (very severe)	10	11	[10–17]	95%

^*Estimation obtained from the best log-linear model (independent sources model with three covariates effects).