Kruskal-Wallis tests for change in PC2 between low-symptom and high-symptom groups
| Predictor | Group 1 | Group 2 | H | P value |
| Recent life stress | Mild/moderate (155) | High (65) | 1.282 | 0.258 |
| Pregnancy negative life events | Low (112) | High (111) | 0.540 | 0.463 |
| State anxiety | Low (126) | High (96) | 0.419 | 0.517 |
| Trait anxiety | Low (104) | High (118) | 1.460 | 0.227 |
| Depression symptoms | High (118) | Low (104) | 0.176 | 0.675 |
| PTSD symptoms | High (75) | Low (142) | 0.465 | 0.495 |
PC2, principal component 2; PTSD, post-traumatic stress disorder.