Table 2.

Concordance of physician- and patient-rated AA severity

N = 549	Physician-reported AA severity, n (%)			Kappa coefficienta	p value
	Mild AA	Moderate AA	Severe AA
Patient-reported AA severity, n (%)
Mild AA	78 (14.2)	43 (7.8)	17 (3.1)	0.67	< 0.001
Moderate AA	14 (2.6)	213 (38.8)	26 (4.7)
Severe AA	2 (0.4)	16 (2.9)	140 (25.5)

AA alopecia areata

^aInterpretation of kappa value: < 0.0 = poor, 0.0–0.20 = slight, 0.21–0.40 = faint, 0.41–0.60 = moderate, 0.61–0.80 = substantial and 0.81–1.00 = almost perfect [26]. Data presented in bold show alignment between physician- and patient-assessed AA severity in 78.5% of cases