Table 1 Characteristics between women with low and high FSF from the S-PRESTO study, 2015–2018
|  | Total (n = 513) | Low FSFa (n = 302) | High FSF (n = 211) |
|---|---|---|---|
Age, n (%) | |||
  < 35 years | 404 (78.8) | 236 (78.1) | 168 (79.6) |
  ≥ 35 years | 109 (21.2) | 66 (21.9) | 43 (20.4) |
Ethnicity, n (%) | |||
 Chinese | 369 (71.9) | 242 (80.1) | 127 (60.2) |
 Malay | 83 (16.2) | 37 (12.3) | 46 (21.8) |
 Indian | 48 (9.4) | 18 (6.0) | 30 (14.2) |
 Mix | 13 (2.5) | 5 (1.7) | 8 (3.8) |
Highest education, n (%) | |||
 Primary/ secondary | 25 (4.9) | 13 (4.3) | 12 (5.7) |
 Post-secondary | 189 (36.8) | 105 (34.8) | 84 (39.8) |
 Tertiary and above | 299 (58.3) | 184 (60.9) | 115 (54.5) |
Parity, n (%) | |||
 0 | 339 (66.1) | 192 (63.6) | 147 (69.7) |
 1 | 127 (24.8) | 80 (26.5) | 47 (22.3) |
  ≥ 2 | 47 (9.2) | 30 (9.9) | 17 (8.1) |
Prior use of hormonal contraceptives in the last 3 months, n (%) | |||
 No | 505 (98.4) | 300 (99.3) | 205 (97.2) |
 Yes | 8 (1.6) | 2 (0.7) | 6 (2.8) |
Body mass index, n (%) | |||
  < 18.5 kg/m2 | 48 (9.4) | 35 (11.6) | 13 (6.2) |
 18.5–22.9 kg/m2 | 236 (46.0) | 152 (50.3) | 84 (39.8) |
 23–27.4 kg/m2 | 124 (24.2) | 67 (22.2) | 57 (27.0) |
  ≥ 27.5 kg/m2 | 105 (20.5) | 48 (15.9) | 57 (27.0) |
Physical activity, n (%) | |||
 Inactive | 107 (20.9) | 69 (22.8) | 38 (18.0) |
 Minimally active | 251 (48.9) | 154 (51.0) | 97 (46.0) |
 Active | 155 (30.2) | 79 (26.2) | 76 (36.0) |
Probable depression, n (%) | |||
 No | 449 (87.5) | 250 (82.8) | 199 (94.3) |
 Yes | 64 (12.5) | 52 (17.2) | 12 (5.7) |
Probable anxiety, n (%) | |||
 No | 406 (79.1) | 224 (74.2) | 182 (86.3) |
 Yes | 107 (20.9) | 78 (25.8) | 29 (13.7) |
Attempted time to conceive at study entry, cycles | 4.5 (0.9–11.8) | 4.3 (0.9–11.6) | 5.0 (1.0–15.5) |
  ≤ 6 cycles | 325 (63.4) | 201 (66.6) | 124 (58.8) |
  ≥ 7 cycles | 188 (36.6) | 101 (33.4) | 87 (41.2) |