Variable | Intervention group n=306 (%) | Control group n=299 (%) | Total n=605 | P values |
Age (years); median (IQR) | 27 (22 to 32) | 27 (23 to 33) | 27 (22 to 33) | 0.389 |
Duration of pregnancy (days); median (IQR) | 56 (48 to 64) | 54 (47 to 63) | 55 (47 to 63) | 0.103 |
Regular smoking | 153 (50.0) | 153 (51.2) | 306 (50.6) | 0.773 |
Regular use of alcohol | 231 (75.5) | 236 (78.9) | 467 (77.2) | 0.313 |
History of drug abuse | 7 (2.3) | 12 (4.0) | 19 (3.1) | 0.224 |
History of pregnancy* | 208 (68.2) | 200 (66.7) | 408 (67.4) | 0.688 |
History of TOP | 139 (45.4) | 120 (40.1) | 259 (42.8) | 0.189 |
History of delivery | 148 (48.4) | 134 (44.8) | 282 (46.6) | 0.382 |
Marital status | 0.242 | |||
Married | 57 (18.6) | 42 (14.0) | 99 (16.4) | |
Cohabiting | 83 (27.1) | 78 (26.1) | 161 (26.6) | |
Single | 166 (54.2) | 179 (59.9) | 345 (57.0) | |
Diagnosis of a psychiatric condition | 54 (17.6) | 40 (13.4) | 94 (15.5) | 0.147 |
STAI index >40 at baseline | 170/300 (56.7) | 169/280 (60.4) | 339/580 (58.4) | 0.367 |
Diagnosis of a somatic condition | 123 (40.2) | 112 (37.5) | 235 (38.8) | 0.490 |
History of STD | 117 (38.2) | 106 (35.5) | 223 (36.9) | 0.478 |
Body mass index (kg/m2); median (IQR) | 23 (21 to 25) | 23 (21 to 26) | 23 (21 to 26) | 0.658 |
*Includes all previous pregnancies, regardless of the outcome, before index pregnancy.
IUD, intrauterine device; STAI, State-Trait Anxiety Inventory; STD, sexually transmitted disease; TOP, termination of pregnancy.