Table 1. Distribution (%) of RSA cases and controls according to the qualitative categories of CAG repeats.

Repeat size	Total number of CAG alleles		CAG Biallelic Mean
	Cases (2N = 234)	Controls (2N = 448)	Cases (N = 117)	Controls (N = 224)
<19	42.7	45.1	47.0	47.7
19*	5.5	14.2	8.9	9.4
>19	51.7	40.6	43.5	43.3

*Control median

χ2 = 14.81, df = 2, p = 0.0006 χ2 = 0.29, df = 2, p = 0.985