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Table 2 Number of children reporting behavioral/neuropsychiatric problems at each three test periods

From: Association between humidifier disinfectant exposure during infancy and subsequent neuropsychiatric outcomes during childhood: a nation-wide cross-sectional study

  

1st test (n = 1147)

2nd test (n = 1160)

3rd test (n = 1164)

  

Non-HD (n = 741)

HD (n = 406)

P value

Non-HD (n = 749)

HD (n = 411)

P value

Non-HD (n = 750)

HD (n = 414)

P value

Total problems

Normal

635 (85.7)

332 (81.8)

 

683 (91.2)

342 (83.2)

 

689 (91.9)

369 (89.1)

 

Over borderline

106 (14.3)

74 (18.2)

0.081

66 (8.8)

69 (16.8)

<0.001

61 (8.1)

45 (10.9)

0.120

Internalizing problems

Normal

623 (84.1)

330 (81.3)

 

659 (88.0)

339 (82.5)

 

668 (89.1)

353 (85.3)

 

Over borderline

118 (15.3)

76 (18.7)

0.227

90 (12.0)

72 (17.5)

0.010

82 (10.9)

61 (14.7)

0.059

Emotionally reactive

Normal

698 (94.2)

382 (94.1)

 

725 (96.8)

385 (93.7)

 

733 (97.7)

393 (94.9)

 

Over borderline

43 (5.8)

24 (5.9)

0.940

24 (3.2)

26 (6.3)

0.012

17 (2.3)

21 (5.1)

0.010

Withdrawal

Normal

687 (92.7)

370 (91.1)

 

710 (94.8)

376 (91.5)

 

713 (95.1)

386 (93.2)

 

Over borderline

54 (7.3)

36 (8.9)

0.341

39 (5.2)

35 (8.5)

0.027

37 (4.9)

28 (6.8)

0.193

Somatic complaints

Normal

691 (93.3)

374 (92.1)

 

710 (94.8)

383 (93.2)

 

718 (95.7)

390 (94.2)

 

Over borderline

50 (6.7)

32 (7.9)

0.476

39 (5.2)

28 (6.8)

0.262

32 (4.3)

24 (5.8)

0.243

Anxious/Depressed

Normal

702 (94.7)

382 (94.1)

 

718 (95.9)

386 (93.9)

 

722 (96.3)

387 (93.5)

 

Over borderline

39 (5.3)

24 (5.9)

0.645

31 (4.1)

25 (6.1)

0.140

28 (3.7)

27 (6.5)

0.032

Externalizing problems

Normal

629 (84.9)

331 (81.5)

 

685 (91.5)

362 (88.1)

 

697 (92.9)

368 (88.9)

 

Over borderline

112 (15.1)

75 (18.5)

0.141

64 (8.5)

49 (11.9)

0.064

53 (7.1)

46 (11.1)

0.018

Attention problems

Normal

730 (98.5)

392 (96.6)

 

732 (97.7)

398 (96.8)

 

744 (99.2)

402 (97.1)

 

Over borderline

11 (1.5)

14 (3.4)

0.029

17 (2.3)

13 (3.2)

0.359

6 (0.8)

12 (2.9)

0.005

Aggressive behavior

Normal

702 (94.7)

378 (93.1)

 

726 (96.9)

396 (96.4)

 

733 (97.7)

395 (95.4)

 

Over borderline

39 (5.3)

28 (6.9)

0.259

23 (3.1)

15 (3.6)

0.596

17 (2.3)

19 (4.6)

0.028

Sleep problems

Normal

685 (92.4)

380 (93.6)

 

727 (97.1)

386 (93.9)

 

732 (97.6)

388 (93.7)

 

Over borderline

56 (7.6)

26 (6.4)

0.468

22 (2.9)

25 (6.1)

0.009

18 (2.4)

26 (6.3)

0.001

Other problems

Normal

697 (94.1)

378 (93.1)

 

719 (96.0)

385 (93)

 

730 (97.3)

390 (94.2)

 

Over borderline

44 (5.9)

28 (6.9)

0.522

30 (4.0)

26 (6.3)

0.078

20 (2.7)

24 (5.8)

0.007

DSM-oriented scales

          

Affective problems

Normal

691 (93.3)

381 (93.8)

 

722 (96.4)

385 (93.7)

 

729 (97.2)

388 (93.7)

 

Over borderline

50 (6.7)

25 (6.2)

0.699

27 (3.6)

26 (6.3)

0.034

21 (2.8)

26 (6.3)

0.004

Anxiety problems

Normal

712 (96.1)

393 (96.9)

 

727 (97.1)

390 (94.9)

 

731 (97.5)

397 (95.9)

 

Over borderline

29 (3.9)

13 (3.2)

0.539

22 (2.9)

21 (5.1)

0.061

19 (2.5)

17 (4.1)

0.138

Pervasive developmental problems

Normal

689 (93.0)

374 (92.1)

 

714 (95.3)

376 (91.5)

 

722 (96.3)

392 (94.7)

 

Over borderline

52 (7.0)

32 (7.9)

0.591

35 (4.7)

35 (8.5)

0.009

28 (3.7)

22 (5.3)

0.203

Oppositional defiant problems

Normal

712 (96.1)

385 (94.8)

 

730 (97.5)

398 (96.8)

 

740 (98.7)

401 (96.9)

 

Over borderline

29 (3.9)

21 (5.2)

0.318

19 (2.5)

13 (3.2)

0.533

10 (0.9)

13 (3.1)

0.034

Attention deficit/hyperactivity problems

Normal

708 (95.5)

382 (94.1)

 

724 (96.7)

384 (93.4)

 

724 (96.5)

391 (94.4)

 

Over borderline

33 (4.5)

24 (5.9)

0.277

25 (3.3)

27 (6.6)

0.011

26 (3.5)

23 (5.6)

0.089

  1. P values less than 0.05 are in bold