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Table 1 Description of the study population

From: Parental separation: a risk for the psychomotor development of children aged 28 to 32 months? A cross-sectional study

Variable (*without unknown data)

%

Description of mother’s characteristics

 

Mother’s age at childbirth (years) n = 28,126

 

 <18

0.9

 18/30

59.1

 31/37

33.0

 ≥38

7.0

Mother’s level of education n = 24,211

 

 <Upper secondary education

22.0

 Upper secondary education completed

31.0

 Higher education/academic or not

47.0

Mother’s native language n = 27,979 (2006–12)

 

 French

77.4

 Other language

22.6

Family structure n = 28,871

 

 Separated parents/sees only one parent/blended family

9.8

 Parents living together

90.2

Description of child’s characteristics

 

 Sex n = 28,629

 

 Male

51.3

 Female

48.7

Children’s age (months) n = 28,819

 

 ≤27

7.1

 28–32

89.2

 ≥33

3.7

Birth weight (g) n = 28,862

 

 <2500

6.9

 ≥2500

93.1

BMI (Kg/m2) at the time of health check n = 27,355

 

 P3-P97

92.0

 >p97

6.2

 <p3

1.8

Normal hearing n = 23,948

 

 Yes

97.5

 No

2.6

Transtympanic drains n = 2,662

 

 Yes

5.0

 No

95.0

Day nursery attendance n = 11,798 (2010–12)

 

 Yes

55.8

 No

44.2