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. 2023 Feb 1;9(2):e25. doi: 10.1192/bjo.2022.635

Table 5.

Statistically significant effects on two-factor score dimensions (PREPS) in pregnant women's (N = 264)

R2adj = 0.21 B s.e. P-value
Preparedness stress factor score
Age −0.023 0.010 0.026
STAI-S 0.019 0.007 0.008
STAI-T 0.020 0.011 0.056
Parity −0.259 0.112 0.022
Income loss 0.247 0.270 0.361
0.205 0.234 0.381
0.673 0.226 0.003
0.448 0.172 0.010
Cancelled perinatal care appointments 0.306 0.168 0.069
Infection stress factor score
STAI-S 0.019 0.006 0.002
Cancelled perinatal care appointments 0.288 0.178 0.107
Total stress factor score
Age −0.019 0.011 0.095
STAI-S 0.027 0.006 <0.001
Income loss 0.105 0.294 0.721
0.012 0.253 0.961
0.490 0.242 0.045
0.245 0.185 0.187
Cancelled perinatal care appointments 0.281 0.178 0.116

R2adj, adjusted R2; PREPS, Pandemic-Related Pregnancy Stress Scale; STAI-S, State-Trait Anxiety Inventory-State; STAI-T, State-Trait Anxiety Inventory-Trait; B, unstandardised coefficient for the PREPS factor scores outcomes after backward elimination with AIC as stopping rule criterion. Note that the P-value considered from the AIC stopping rule is lower than approximately 0.157. This explains why some variables stayed in the model although they had a P-value larger than 0.05.