Table 2

Results of the multiple logistic regression analysis on the association of independent variables on adolescents' "Extra-curricular physical activity"

Model I

Dependent variable: "extra-curricular physical activity"

Independent variables

OR (95% CI)

Sex

Males (reference group)

1

Females

1.27 (1.04 – 1.56)*

Father's educational level

Primary school

0.54 (0.37 – 0.80)**

Junior high school (reference group)

1

High school

1.26 (1.01 – 1.59)*

Degree

1.93 (1.36 – 2.72)**

Father's physical activity

No (reference group)

1

Yes

1.58 (1.25 – 2.00)**

Mother's physical activity

No (reference group)

1

Yes

1.31(1.03 – 1.66)*

Physical activity is important in socialising

No (reference group)

1

Yes

2.46 (1.90 – 3.19)**

Father's work activity

Non skilled worker (reference group)

1

Unemployed

0.36 (0.17 – 0.80)*

Manager/Professional

1.29 (1.01 – 1.67)*

Office worker/Skilled worker

1.11 (0.87 – 1.40)

Model II

Dependent variable: "extra-curricular physical activity"

Independent variables

OR (95%CI)

Sex

Males (reference group)

1

Females

1.27 (1.04 – 1.55)*

Father's educational level

Primary school

0.51 (0.35 – 0.73)**

Junior high school (reference group)

1

High school

1.17 (0.92 – 1.47)

Degree

1.44 (1.04 – 1.99)*

Father's physical activity

No (reference group)

1

Yes

1.58 (1.25 – 2.01)**

Mother's physical activity

No (reference group)

1

Yes

1.32 (1.07 – 1.68)*

Physical activity is important in socialising

No (reference group)

1

Yes

2.34 (1.80 – 3.07)**

Familial socio-economic index

Low and Middle-low (reference group)

1

Middle

1.23 (0.97 – 1.55)

High

1.63 (1.19 – 2.25)**

Very high

1.96 (1.43 – 2.69)**

* p < 0.05; ** p < 0.01

Torre et al. BMC Public Health 2006 6:22   doi:10.1186/1471-2458-6-22