Table 1 Participant characteristics
Characteristics | AAR women (N = 200) n (%) | Women with current AAR (n = 65) n (%) | Women with AAR within a year (n = 135) n (%) | Healthy women (N = 96) n (%) | p a |
|---|---|---|---|---|---|
Age (years) | Â | Â | Â | Â | .556 |
 ≤ 35 | 150 (75.0) | 44 (67.7) | 106 (78.5) | 75 (78.1) |  |
 36–40 | 47 (23.5) | 20 (30.8) | 27 (20.0) | 19 (19.8) |  |
 >40 | 3 (1.5) | 1 (1.5) | 2 (1.5) | 2 (2.1) |  |
Educational status | Â | Â | Â | Â | .774 |
 High school | 21 (10.5) | 2 (3.1) | 19 (14.1) | 2 (2.0) |  |
 University/College | 130 (65.0) | 47 (72.3) | 83 (61.5) | 71 (74.0) |  |
 Graduate School | 49 (24.5) | 16 (24.6) | 33 (24.4) | 23 (24.0) |  |
Employment | Â | Â | Â | Â | .175 |
 Full time | 145 (72.5) | 48 (73.8) | 97 (71.9) | 63 (65.6) |  |
 Part time | 17 (8.5) | 4 (6.2) | 13 (9.6) | 15 (15.6) |  |
 Unemployed | 38 (19.0) | 13 (20.0) | 25 (18.5) | 18 (18.8) |  |
Household monthly income (Taiwan dollars) | Â | Â | Â | Â | .229 |
 ≤40,000 | 43 (21.5) | 12 (18.5) | 31 (23.0) | 25 (26.0) |  |
 40,001 ~ 80,000 | 75 (37.5) | 26 (40.0) | 49 (36.3) | 41 (42.7) |  |
 > 80,000 | 82 (41.0) | 27 (41.5) | 55 (40.7) | 30 (31.3) |  |
Nulliparous | 94 (47.0) | 41 (63.1) | 53 (39.3) | 51 (53.1) | .190 |
Hospitalized for preterm labor: yes | 74 (37.0) | 19 (29.2) | 55 (40.7) | – |  |
Tocolytics usage: yes | 162 (81.0) | 53 (81.5) | 109 (80.7) | – |  |