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Journal of Population Sciences

Table 1 Descriptive statistics

From: Adolescent sexual behaviour and academic performance of Italian students

 

2000

2017

Variables

Full sample

Boys

Girls

Full sample

Boys

Girls

 

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Outcome variable

      

High school final mark

82.95 (12.21)

79.65 (12.35)

85.27 (11.56)

81.42 (11.45)

78.92 (11.23)

84.16 (11.05)

Explanatory variables

      

Abstinence

0.45 (0.49)

0.41 (0.49)

0.48 (0.49)

0.29 (0.45)

0.27 (0.44)

0.30 (0.46)

Early age at 1st sex

0.06 (0.24)

0.08 (0.28)

0.05 (0.21)

0.13 (0.34)

0.13 (0.34)

0.13 (0.34)

Covariates

      

Mark before secondary school

8.24 (1.17)

8.04 (1.18)

8.39 (1.14)

8.29 (1.10)

8.13 (1.10)

8.46 (1.07)

He/she was doing volunteering

0.10 (0.30)

0.07 (0.27)

0.11 (0.32)

0.09 (0.28)

0.07 (0.26)

0.10 (0.30)

He/she was doing sport

0.68 (0.46)

0.80 (0.39)

0.59 (0.49)

0.78 (0.42)

0.84 (0.36)

0.66 (0.47)

Mother has at least

high school degree

0.46 (0.49)

0.53 (0.49)

0.41 (0.49)

0.67 (0.46)

0.70 (0.44)

0.61 (0.48)

Father has at least

high school degree

0.49 (0.49)

0.56 (0.49)

0.44 (0.49)

0.62 (0.48)

0.67 (0.49)

0.57 (0.49)

Father unemployed

0.06 (0.25)

0.06 (0.25)

0.06 (0.25)

0.05 (0.23)

0.05 (0.23)

0.05 (0.23)

Mother unemployed

0.45 (0.49)

0.42 (0.49)

0.47 (0.49)

0.34 (0.47)

0.32 (0.46)

0.35 (0.47)

Parents worked as

a white collar

0.56 (0.49)

0.64 (0.47)

0.56 (0.49)

0.59 (0.49)

0.62 (0.48)

0.55 (0.49)

Divorce

0.03 (0.19)

0.04 (0.20)

0.03 (0.18)

0.11 (0.32)

0.12 (0.32)

0.10 (0.31)

Born in the South of Italy

0.34 (0.47)

0.31 (0.46)

0.36 (0.48)

0.44 (0.49)

0.42 (0.49)

0.46 (0.49)

Living in a district

(more 50000 habitans)

0.36 (0.48)

0.41 (0.49)

0.32 (0.47)

0.39 (0.48)

0.43 (0.49)

0.34 (0.47)

Instrumental variables (IV)

      

Had sex without emotional involvement

0.28 (0.65)

0.49 (0.50)

0.12 (0.33)

0.39 (0.48)

0.52 (0.49)

0.24 (0.43)

Having cheated the partner

0.18 (0.38)

0.27 (0.44)

0.11 (0.31)

0.18 (0.38)

0.24 (0.42)

0.11 (0.32)

Had sex without being in relationship

and without using the condom

0.21 (0.41)

0.27 (0.44)

0.17 (0.38)

0.34 (0.47)

0.38 (0.48)

0.29 (0.45)

Observations

4,716

1,948

2,768

7,727

4,048

3,679