Table 1.
Skewed XCI in Women with RSA or with a Trisomic Pregnancy
| Ascertainment (n) | No. ⩾90%Skewed XCI (%) | P | No. ⩾95%Skewed XCI (%) | P |
| All RSA (207) | 25 (12) | .16,a .18,b .08c | 11 (5.3) | .13,a .06,b .03c |
| Women with trisomic pregnancy: | ||||
| RSA (39) | 8 (21) | .02,a .03,b .007c | 5 (13) | .02,a .007,b .004d |
| Non-RSA (11) | 1 (9) | Not significant | 0 (0) | Not significant |
| Non-RSA, Mosaic (53) | 9 (17) |
.05,a,b .02,c | 5 (9) |
.05,a .02,b .01d |
| Total (103) | 18 (18) | .005c | 10 (10) | .002d |
| Control group: | ||||
| 1 (102) | 7 (7) | 2 (2) | ||
| 2 (99) | 7 (7) |
1 (1) |
||
| Total (201) | 14 (7) | 3 (1.5) |
a
Compared with control group 1, Fisher’s test.
b
Compared with control group 2, Fisher’s test.
c
Compared with both control groups, χ2 test.
d
Compared with both control groups, Fisher’s test.