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Journal of Population Sciences

Table 5 Descriptive statistics

From: Adolescent sexual behaviour and academic performance of Italian students

Variables

Mean (St. dev)

Min–max

Outcome variable

  

High school final mark

82.00 (11.77)

60–100

Explanatory variables

  

Sexual abstinence

0.35 (0.47)

0–1

Early age at first intercourse

0.10 (0.31)

0–1

Covariates

  

Mark before secondary school (terza media)

8.27 (1.12)

6–10

He/she was doing volunteering often when she/he was 14–18

0.09 (0.29)

0–1

He/she was doing sport often when she/he was 14–18

0.73 (0.44)

0–1

Mother has at least high school degree

0.59 (0.49)

0–1

Father has at least high school degree

0.57 (0.49)

0–1

Father unemployed during high school period

0.06 (0.23)

0–1

Mother unemployed during high school period

0.38 (0.48)

0–1

Parents worked as a white collar during high school period

0.59 (0.49)

0–1

Divorce

0.08 (0.28)

0–1

Born in the South of Italy

0.40 (0.49)

0–1

Living in a district with more than 50000 habitans (school time)

0.38 (0.48)

0–1

Instrumental variables (IV)

  

Having had sex without emotional involvement

0.36 (0.48)

0–1

Having had sex with someone

  

without being in relationship with and without using the condom

0.30 (0.45)

0–1

Having cheated the partner

0.18 (0.38)

0–1

  1. Source: SELFY (2000 and 2017)
  2. N = 12,443