Table 3. Estimates of Point Prevalence of Vitiligo.

Participants	Vitiligo prevalence estimate, % (95% CI)
	Overall	Nonsegmental	Segmental
Diagnosed and undiagnosed combineda
Self-reported	1.38 (1.26-1.49)	0.77 (0.68-0.85)	0.61 (0.53-0.69)
Clinician adjudicatedb	0.76 (0.68-0.84)	0.58 (0.49-0.66)	0.18 (0.15-0.21)
Boundc
Lower	0.76 (0.67-0.84)	0.57 (0.49-0.66)	0.18 (0.15-0.21)
Upper	1.11 (1.01-1.21)	0.84 (0.74-0.95)	0.27 (0.23-0.31)
Diagnosed
Self-reported	0.77 (0.68-0.85)	0.48 (0.41-0.55)	0.28 (0.23-0.33)
Clinician adjudicatedb,c	0.46 (0.39-0.52)	0.37 (0.30-0.43)	0.09 (0.07-0.11)
Boundd
Lower	0.46 (0.39-0.52)	0.37 (0.30-0.43)	0.09 (0.07-0.11)
Upper	0.61 (0.54-0.69)	0.49 (0.41-0.56)	0.12 (0.10-0.15)
Undiagnosed
Self-reported	0.61 (0.54-0.69)	0.29 (0.23-0.34)	0.33 (0.27-0.38)
Clinician adjudicatedb,c	0.29 (0.24-0.34)	0.21 (0.15-0.26)	0.08 (0.06-0.11)
Boundd
Lower	0.29 (0.24-0.34)	0.20 (0.15-0.26)	0.08 (0.06-0.11)
Upper	0.50 (0.43-0.57)	0.36 (0.29-0.43)	0.15 (0.12-0.17)

^a Owing to within-group weighting, the sum of the individual diagnosed and undiagnosed estimates may differ slightly from the total estimates.

^b Photographs were uploaded for clinician adjudication by 71 participants with self-reported diagnosed vitiligo and 42 participants with self-reported undiagnosed vitiligo. There was moderate agreement among the 3 expert dermatologists (Fleiss κ = 0.52; P < .001). Clinician-adjudicated vitiligo diagnoses were further adjudicated for nonsegmental and segmental vitiligo classification.

^c Nonsegmental and segmental clinician-adjudicated estimates are adjusted to account for 54.5% of self-reported segmental vitiligo diagnoses being adjudicated as segmental and 100% of self-reported nonsegmental vitiligo diagnoses being adjudicated as nonsegmental.

^d Sensitivity analysis results: lower bound, indeterminate diagnoses were classified as nonvitiligo diagnoses, and upper bound, indeterminate diagnoses were classified as vitiligo diagnoses.