Table 1. Inter-rater agreement for the 8-group geometric classification: 3 evaluators at occasion 1 and occasion 2.

Hair Curl Group	Number of	Occasion 1		Occasion 2
	Hair strands at each occasion	Kappa	95% CI	Kappa	95% CI
I	60	0.170	0.007–0.334	0.603	0.440–0.766
II	240	0.419	0.256–0.583	0.443	0.279–0.606
III	300	0.379	0.216–0.543	0.439	0.275–0.602
IV	180	0.515	0.352–0678	0.554	0.391–0.717
V	150	0.604	0.441–0.768	0.364	0.200–0.527
VI	30	0.182	0.018–0.345	0.407	0.244–0.571
VII	360	0.396	0.232–0.559	0.453	0.290–0616
VIII	120	0.074	0.000–0.237	0.399	0.236–0.562
Combined	1440	0.380	0.313–0.447	0.455	0.389–0.521