Mean gestational age in weeks (s.d.) |
6.4 (1.3) |
6.0 (1.4) |
<0.001 |
Gestational age at treatment |
|
|
|
6 weeks and under |
5,582 (25.2) |
11,947 (39.8) |
<0.001 |
Over 6 weeks |
16,576 (74.8) |
18,037 (60.2) |
|
Mean age in years (s.d.) |
27.8 (6.6) |
28.5 (6.7) |
<0.001 |
Ethnicity |
|
|
|
Asian |
2,038 (9.2) |
2,652 (8.8) |
<0.001 |
Black |
1,656 (7.5) |
2,282 (7.6) |
|
Multiracial |
1,004 (4.5) |
1,361 (4.5) |
|
White |
15,840 (71.5) |
20,910 (69.7) |
|
Other |
489 (2.2) |
638 (2.1) |
|
Unknown |
1,131 (5.1) |
2,141 (7.1) |
|
Previous abortions |
|
|
|
0 |
13,098 (59.1) |
16,741 (55.8) |
<0.001 |
1+ |
9,060 (40.9) |
13,243 (44.2) |
|
Parity |
|
|
|
0 |
10,133 (45.7) |
11,741 (39.2) |
<0.001 |
1+ |
12,025 (54.3) |
18,243 (60.8) |
|
Mean waiting time in days (s.d.) |
10.7 (19.9) |
6.5 (13.5) |
<0.001 |