Table 4.

Association of onychogryphosis with dermatologic and infectious disease

	Controls (n = 3,424)	Onychogryphosis (n = 1,141)	OR (95% CI)	p value
Psoriasis	98 (2.9)	67 (5.9)	2.14 (1.55–2.95)	3.61E–06
Pemphigus	<20 (<2.6)	<20 (<2.6)	0.134 (0.0141–1.27)	7.97E–02
Onychomycosis	<20 (<2.6)	<20 (<2.6)	3.69 (1.81–7.52)	3.17E–04
Syphilis	<20 (<2.6)	<20 (<2.6)	0.269 (0.11–0.659)	4.07E–2

The number of cases/controls with each co-diagnosis is indicated in the respective columns, with percentage of individuals provided in parentheses. Bolded rows indicate significant associations (FDR <0.1).