From: FMR1 CGG allele size and prevalence ascertained through newborn screening in the United States
 |  | Overall | White | Black | Hispanic | Asian | Other | Unknown |
---|---|---|---|---|---|---|---|---|
 |  | Group* N = 14,179 | N = 4,161 | N = 3069 | N = 3493 | N = 796 | N = 1286 | N = 1374 |
Females (N) | Â | 6,889 | 2,014 | 1,508 | 1,709 | 368 | 614 | 676 |
Normal (count) | Â | 6,751 | 1969 | 1,479 | 1,677 | 360 | 601 | 665 |
   Gray | Count (rate) | 105 (1:66) | 35 (1:58) | 20 (1:75) | 29 (1:59) | 5 (1:74) | 8 (1:77) | 8 (1:84) |
 | (95% CI**) Gray | 1:80-1:54 | 1:82-1:42 | 1:123-1:49 | 1:88-1:41 | 1:226-1:32 | 1:177-1:39 | 1:195-1:43 |
   Premutation | Count (rate) | 33 (1:209) | 10 (1:201) | 9 (1:168) | 3 (1:570) | 3 (1:123) | 5 (1:123) | 3 (1:225) |
 | (95% CI) Pre | 1:303-1:149 | 1:420-1:110 | 1:366-1:89 | 1:2761-1:195 | 1:594-1:42 | 1:377-1:53 | 1:1092-1:77 |
Males (N) | Â | 7,290 | 2,147 | 1,561 | 1,784 | 428 | 672 | 698 |
Normal (count) | Â | 7,208 | 2,106 | 1,548 | 1,772 | 427 | 662 | 693 |
   Gray | Count (rate) | 65 (1:112) | 35 (1:61) | 11 (1:142) | 9 (1:198) | 0 (N/A) | 6 (1:112) | 4 (1:174) |
 | (95% CI) Gray | 1:145-1:88 | 1:88-1:44 | 1:284-1:80 | 1:433-1:105 | N/A | 1:305-1:52 | 1:640-1:68 |
   Premutation | Count (rate) | 17 (1:429) | 6 (1:358) | 2 (1:780) | 3 (1:595) | 1 (1:428) | 4 (1:168) | 1 (1:698) |
 | (95% CI) Pre | 1:736-1:268 | 1:974-1:165 | 1:6443-1:216 | 1:2882-1:204 | 1:16906-1:77 | 1:616-1:66 | 1:27570-1:126 |