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Table 1 Sociodemographic characteristics of the studied groups (n = 72)

From: Autistic traits in offspring of schizophrenic patients in comparison to those of normal population: a case-control study

Characteristics

Case group (n = 36)

Control group (n = 36)

Test

P value

Child age (years)

 Mean ± SD (range)

9.10 ± 2.28 (4–11)

9.80 ± 1.98 (4–11)

1.39a

0.167

 4–7

8 (22.2%)

5 (13.9%)

0.845b

0.358

 > 7–11

28 (77.8%)

31 (86.1%)

Child sex, No. (%)

 Male

20 (55.6)

17 (47.2)

0.500b

0.479

 Female

16 (44.4)

19 (52.8)

Child education, No. (%)

 Uneducated

5 (13.9)

3 (8.3)

1.272b

0.736

 Kindergarten

2 (5.5)

1 (2.8)

 Primary

25 (69.5)

29 (80.6)

 Preparatory

4 (11.1)

3 (8.3)

Fathers’ age (years)

 Mean ± SD (range)

47.3 ± 10.7 (20–65)

44.1 ± 10.0 (22–65)

1.322a

0.191

 20–39

11 (30.6%)

15 (41.7%)

1.382b

0.501

 40–59

21 (58.3%)

19 (52.8%)

 ≥ 60

4 (11.1%)

2 (5.5%)

Mothers’ age (years)

 Mean ± SD (range)

39.4 ± 13.8 (20–61)

40.5 ± 14.3 (20–60)

0.34a

0.731

 20–39

15 (41.7%)

13 (36.1%)

0.643b

0.725

 40–59

18 (50%)

18 (50%)

 ≥ 60

3 (8.3%)

5 (13.9%)

Fathers’ education, No. (%)

 Uneducated

26 (72.2)

19 (52.8)

2.90b

0.088

 Educated

10 (27.8)

17 (47.2)

Mothers’ education, No. (%)

 Uneducated

23 (63.9)

21 (58.3)

0.233b

0.629

 Educated

13 (36.1)

15 (41.7)

Fathers’ occupation, No. (%)

 Not working

15 (41.7)

14 (38.9)

0.057b

0.810

 Working

21 (58.3)

22 (61.1)

Mothers’ occupation, No. (%)

 Not working

33 (91.7)

29 (80.6)

1.858b

0.173

 Working

3 (8.3)

7 (19.4)

Family income, No. (%)

 Insufficient

24 (66.7)

19 (52.8)

1.443b

0.229

 Sufficient

12 (33.3)

17 (47.2)

Social class, No. (%)

 Low

28 (77.8)

32 (88.9)

1.60b

0.206

 Moderate

8 (22.2)

4 (11.1)

  1. aIndependent t-test
  2. bChi-square test (χ2)