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Table 4 Prevalence estimates and distribution of age, sex, nationality, and SES for five-class-model of USQ and SBQ ( N = 4,237)

From: Different stability of social-communication problems and negative demanding behaviour from infancy to toddlerhood in a large Dutch population sample

USQ (T1)

Class 1 n(%)

Class 2 n(%)

Class 3 n(%)

Class 4 n(%)

Class 5 n(%)

Total n(%)

df

F; p(age) χ2; p(others)

Age (child) (M, SD)

14.71 (0.65)

14.74 (0.76)

14.68 (0.55)

14.56 (0.56)*

14.72 (0.64)

14.69 (0.68)

4, 4216

9.08; < 0.001

Sex (child)

      

4

21.60; < 0.001

Boys

651 (46.6)b

793 (52.3)

98 (53.0)

401 (55.2)

233 (56.3)

2,176 (51.4)

  

Girls

745 (53.4)a

723 (47.7)

87 (47.0)

325 (44.8)

181 (43.7)

2,061 (48.6)

  

Nationality (child)

      

8

60.71; < 0.001

Dutch

1,354 (97.0)a

1,432 (94.5)

160 (86.5)b

692 (95.3)

375 (90.6)b

4,013 (94.7)

  

Non-Dutch

39 (2.8)b

77 (5.1)

25 (13.5)a

32 (4.4)

38 (9.2)a

211 (5.0)

  

SES (parents)

      

12

130.88; < 0.001

Low

111 (8.0)b

144 (9.5)

40 (21.6)a

100 (13.8)

83 (20.0)a

478 (11.3)

  

Moderate

486 (34.8)b

622 (41.0)

86 (46.5)

291 (40.1)

184 (44.4)

1,669 (39.4)

  

High

795 (56.9)a

741 (48.9)

58 (31.4)b

332 (45.7)

145 (35.0)b

2,071 (48.9)

  

Prevalence

1,396 (32.9)

1,516 (35.8)

185 (4.4)

726 (17.1)

414 (9.8)

4,237 (100.0)

  

SBQ (T2)

Class 1 n (%)

Class 2 n (%)

Class 3 n (%)

Class 4 n (%)

Class 5 n (%)

Total n (%)

df

F ; p (age) χ 2 ; p (others)

Age (child) (M, SD)

36.71 (2.59)

36.44 (2.62)*

36.66 (2.69)

36.91 (2.64)

36.77 (2.66)

36.64 (2.63)

4, 4220

4.62; 0.001

Sex (child)

      

4

16.76; 0.002

Boys

642 (48.3)

827 (53.2)

225 (57.1)

351 (48.3)

131 (56.0)

2,176 (51.4)

  

Girls

686 (51.7)

728 (46.8)

169 (42.9)

375 (51.7)

103 (44.0)

2,061 (48.6)

  

Nationality (child)

      

8

72.53; < 0.001

Dutch

1,282 (96.5)a

1,478 (95.0)

354 (89.8)b

696 (95.9)

203 (86.8)b

4,013 (94.7)

  

Non-Dutch

40 (3.0)b

71 (4.6)

40 (10.2)a

29 (4.0)

31 (13.2)a

211 (5.0)

  

SES (parents)

      

12

247.67; < 0.001

Low

94 (7.1)b

140 (9.0)b

93 (23.6)a

97 (13.4)

54 (23.1)a

478 (11.3)

  

Moderate

425 (32.0)b

615 (39.5)

180 (45.7)

341 (47.0)a

108 (46.2)

1,669 (39.4)

  

High

803 (60.5)a

791 (50.9)

118 (29.9)b

287 (39.5)b

72 (30.8)b

2,071 (48.9)

  

Prevalence

1,328 (31.4)

1,555 (36.7)

394 (9.3)

726 (17.1)

234 (5.5)

4,237 (100.0)

  
  1. Note. Percentages of demographic characteristics are given for each individual class, so that the total amounts to (approximately) 100 vertically. However, percentages regarding prevalence add up to 100 horizontally.
  2. *USQ: Children in class 4 were significantly younger than children in classes 1, 2, and 5 (p < 0.001).
  3. SBQ: Children in class 2 were significantly younger than children in class 4 (p < 0.001).
  4. Adjusted residuals revealed significant differences in percentages of children in classes on variables sex, nationality, and SES (p < 0.001).
  5. aPercentage was significantly higher than the overall average percentage.
  6. bPercentage was significantly lower than the overall average percentage.
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Child and Adolescent Psychiatry and Mental Health

ISSN: 1753-2000