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Table 2 Cohort characteristics

From: Mortality in individuals with childhood ADHD or subthreshold symptoms – a prospective perinatal risk cohort study over 40 years

Characteristic

cADHD (1) n = 115

cAP (2) n = 216

Non-cAP (3) n = 508

F / χ2 (df)

p

V / η2

Pairwise comparison

M ± SD or n (%)

M ± SD or n (%)

M ± SD or n (%)

Gender (male)

82 (71.3%)

138 (63.9%)

238 (46.9%)

32.77 (2)

 < 0.001

0.20

3 < 1,2***

Birth weight (gr)

2829.5 ± 915.7

2908.8 ± 831.8

2942.9 ± 886.7

0.80

0.45

0.002

 

Apgar score

8.03 ± 2.52

8.70 ± 2.03

8.30 ± 2.31

 

0.02

0.01

1 < 2*

Number of birth risks

   

12.28 (4)

0.02

0.09

 

1

52 (45.2)

133 (61.6)

308 (60.6)

   

1 < 2**,3*

2

43 (37.4)

65 (30.1)

147 (28.9)

    

3 or more

20 (17.4)

18 (8.3)

53 (10.4)

   

1 > 2*

Childhood SES

   

35.6 (6)

 < 0.001

0.15

 

 Level 1

11 (9.6)

45 (20.8)

113 (22.2)

   

1 < 2**,3*

 Level 2

26 (22.6)

39 (18.1)

150 (29.5)

   

2 < 3**

 Level 3

59 (51.3)

115 (53.2)

218 (42.9)

   

2 > 3*

 Level 4

19 (16.5)

17 (7.9)

27 (5.3)

   

1 > 2*, 3***

  1. cADHD Childhood ADHD, cAP Childhood attention problems, Non-cAP No childhood attention problems, SES Socioeconomic status
  2. * p < 0.05, ** p < 0.01, *** p < 0.001