Table 3 Summary of the final model of stepwise linear regression analyses of body image at T1

β

β

β

β

β

β

Sociodemographic variables

 Age

-.220**

 School education (0 = low to middle; 1 = high)

 Household income

 Parity (0 = primiparous; 1 = multiparous)

.129*

Pregnancy-related variables

 Pregnancy plans

 Desire for Pregnancy

-.154*

-.189**

Weight- and physical health-related variables

 Pre-pregnancy BMI

.168**

 Weight gain (before pregnancy to T1)

.148**

.149*

 Current physical disorders (0 = no; 1 = yes)

.163*

.117*

 Poor Sleep Quality (PSQI)

.144*

.134*

Eating- and activity-related variables

 Number of days with eating attacks (EDE-Q)

.201**

 Number of days with uncontrolled eating (EDE-Q)

.331***

.133*

 Moderate physical activity (IPAQ)

.122*

 Intense physical activity (IPAQ)

.139*

-.144*

Psychological variables

 Social Support (BSSS)

-.153*

 Mental disorders before pregnancy (0 = no; 1 = yes)

.140*

 Depression (EDPS)

.222**

 Worry (CWS)

.164*

.205**

 Self-Esteem (RSE)

-.237***

-.426***

 F (df1, df2)

16.784*** (7, 214)

8.573*** (4, 217)

7.948***

(3, 218)

8.267***

(5, 216)

5.317*

(1, 220)

20.183

(4, 217)

R² (adjusted R²)

.345 (.333)

.136 (.121)

.099 (.086)

.161 (.141)

.024 (.019)

.271 (.258)