Table 1. The Distribution of Angle Kappa and Age ^a.

Variables	Kappa of Arc, Degrees	Kappa Intercept, Degree
Males' Age, y
< 20	5.32 ± 2.09	221.59 ± 106.64
20-25	5.06 ± 1.26	234.79 ± 99.93
25-30	4.95 ± 1.31	244.50 ± 94.96
30-35	5.01 ± 1.36	248.21 ± 93.80
> 35	4.76 ± 1.30	255.04 ± 85.65
Females' Age, y
< 20	5.66 ± 1.32	230.71 ± 109.18
20-25	4.94 ± 1.45	231.61 ± 101.70
25-30	4.91 ± 1.66	234.55 ± 98.52
30-35	5.12 ± 1.37	244.70 ± 89.84
> 35	4.77 ± 1.40	244.48 ± 91.66
All Participants' Age, y
< 20	5.53 ± 1.65	227.15 ± 107.41
20-25	5.02 ± 1.33	233.70 ± 100.46
25-30	4.93 ± 1.45	240.64 ± 96.39
30-35	5.05 ± 1.36	248.76 ± 91.78
> 35	4.76 ± 1.29	250.44 ± 88.35
Males	5.00 ± 1.36	240.21 ± 97.17
Females	4.97 ± 1.30	244.22 ± 94.39
All	4.96 ± 1.38	241.28 ± 96.02

^a Data are presented in mean ± SD.