Table 2.
Multiple logistic regression models with maximum likelihood-ratio comparisons.
| High anxiety (GAD-7 ≥ 7) | BIC | Pseudo-R2 | Δ% | χ2-test |
|---|---|---|---|---|
| Null model | +395.340 | – | – | – |
| Covariates only | +443.559 | 0.079 | +7.95% | p = 0.006* |
| Covariates + PSS | +387.603 | 0.238 | +15.81% | p < 0.001* |
| Covariates + PSS + PRS | +388.733 | 0.264 | +2.61% | p = 0.006* |
| Covariates + PSS + PRS + Cope | +367.497§ | 0.362 | +9.80% | p < 0.001* |
| High depression (PHQ-2 ≥ 3) | ||||
| Null model | +193.355 | – | – | – |
| Covariates only | +229.013 | 0.232 | +23.19% | p < 0.001* |
| Covariates + PSS | +225.951 | 0.278 | +4.64% | p = 0.003* |
| Covariates + PSS + PRS | +232.716 | 0.303 | +2.42% | p = 0.103 |
| Covariates + PSS + PRS + Cope | +205.558§ | 0.538 | +23.51% | p < 0.001* |
| Positive screening for OCD | ||||
| Null model | +233.488 | – | – | – |
| Covariates only | +294.631 | 0.079 | +7.92% | p = 0.205 |
| Covariates + PSS | +300.221 | 0.079 | +0.03% | p = 0.797 |
| Covariates + PSS + PRS | +307.186 | 0.099 | +1.91% | p = 0.114 |
| Covariates + PSS + PRS + Cope | +311.425§ | 0.154 | +5.59% | p = 0.005* |
Best models for BIC were marked in the BIC column.
BIC, Bayesian Information Criterion; Cope, Coping strategies (measured with NuPCI-PP, NuPCI-A, and NuPCI-SPC scales); GAD-7, General Anxiety Disorder – 7 questionnaire; NuPCI, Revised Prenatal Coping Inventory; NuPCI-A, NuPCI, Avoidance scale; NuPCI-PP, NuPCI, Planning-Preparation scale; NuPCI-SPC, NuPCI, Spiritual-Positive coping scale; NuPDQ, Revised Prenatal Distress Questionnaire; OCD, Obsessive-Compulsive problems (screening); PHQ-2, Patient Health Questionnaire – 2; PREPS, Pandemic-Related Pregnancy Stress questionnaire; PREPS-PIS, PREPS, Perinatal Infection Stress scale; PREPS-PS, PREPS, Preparedness Stress scale; PRS, Pandemic-Related Stress (measured with PREPS-PS and PREPS-PIS scales); Pseudo-R2, McFadden's pseudo coefficient of determination of the model; PSS, Pregnancy-Specific Stress (measured with the NuPDQ); Δ%, Increase in the percentage of variance explained (compared to the previous model).
p <0.050.
Best model (considering statistical significance and BIC).