Table 2 Main models by year, odds ratios

 Age

0.723***

0.779***

0.715***

0.738***

(0.029)

(0.024)

(0.027)

(0.027)

 First born

1.052

0.935

1.163*

1.072

(0.117)

(0.082)

(0.101)

(0.093)

 Father’s education (number of years)

1.009

0.993

1.006

1.009

(0.018)

(0.014)

(0.015)

(0.015)

 Mother’s education (number of years)

0.952***

0.987

0.972*

0.993

(0.017)

(0.015)

(0.016)

(0.016)

 Parents separated or divorced

1.084

0.753

0.683***

0.618***

(0.239)

(0.141)

(0.096)

(0.101)

 Balanced or intense relationship with the father

0.757**

1.325***

0.852

1.191

(0.099)

(0.130)

(0.103)

(0.148)

 Balanced or intense relationship with the mother

1.439**

1.212

1.314

1.317

(0.243)

(0.150)

(0.277)

(0.239)

 Have talked in depth with parents about sex

0.739**

0.788**

0.684***

0.657***

(0.090)

(0.075)

(0.072)

(0.063)

 Having attended the disco often or very often between 16 and 18 years

0.335***

0.548***

0.282***

0.393***

(0.039)

(0.052)

(0.027)

(0.040)

 Off-site student

0.975

1.086

0.926

1.020

(0.228)

(0.215)

(0.082)

(0.089)

 Satisfaction about own body image nowadays

0.510***

0.809**

0.679***

1.045

(0.080)

(0.081)

(0.070)

(0.100)

 BMI

0.711

0.965

0.677***

1.112

(0.179)

(0.124)

(0.088)

(0.123)

 BMI²

1.007

1.003

1.007***

1.000

(0.006)

(0.003)

(0.003)

(0.002)

 Having had at least one physical problem between the 14 and 18 years

1.242*

1.169

1.223**

1.317***

(0.148)

(0.112)

(0.112)

(0.122)

 Depression

1.094

1.318***

1.490***

1.279***

(0.133)

(0.123)

(0.133)

(0.114)

 Opinion about the importance of religion in life

1.542***

1.765***

1.417***

1.381***

(0.184)

(0.193)

(0.133)

(0.128)

 Participation in religious groups

2.202***

2.129***

1.567***

1.002

(0.326)

(0.218)

(0.206)

(0.121)

 Area of birth: Centre Italy (ref. North Italy)

1.041

0.946

0.885

0.773**

(0.142)

(0.108)

(0.096)

(0.090)

 Area of birth: South Italy

0.824

1.204*

0.593***

0.774**

(0.109)

(0.121)

(0.062)

(0.082)

N

1,950

2,744

4,029

3,677

 Pseudo-R²

0.138

0.121

0.139

0.110