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Table 4 Proportion of subjects with 7-month persistent symptoma

From: Psychological effects of a disastrous hydrogen fluoride spillage on the local community

 

Symptom(−)

Symptom(+)

P-valueb

N

(%)

N

(%)

 

Ages

    

0.000

  < 20

198

(98.0)

4

(2.0)

 20–29

98

(90.7)

10

(9.3)

 30–39

128

(83.1)

26

(16.9)

 40–49

105

(83.3)

21

(16.7)

 50–59

34

(57.6)

25

(42.4)

 60–69

11

(45.8)

13

(54.2)

 70–79

8

(25.8)

23

(74.2)

  ≥ 80

2

(28.6)

5

(71.4)

Gender

    

0.004

 Male

379

(85.4)

65

(14.6)

 Female

205

(76.8)

62

(23.2)

Exposure level

    

0.000

 Extremely low

51

(98.1)

1

(1.9)

 Low

219

(92.4)

18

(7.6)

 Moderate

191

(83.4)

38

(16.6)

 High

123

(63.7)

70

(36.3)

Impact of Event Scale

    

0.000

 Normal

388

(94.2)

24

(5.8)

 Moderate

162

(79.4)

42

(20.6)

 Severe

29

(42.0)

40

(58.0)

 Very severe

5

(19.2)

21

(80.8)

Anxiety Level

    

0.000

 Normal

568

(84.8)

102

(15.2)

 Anxiety

8

(53.3)

7

(46.7)

 Severe anxiety

3

(30.0)

7

(70.0)

 Extreme anxiety

5

(31.3)

11

(68.8)

  1. aPesistent symptom: one or more of the three symptoms (persistent irritation in the eyes, throat, respiratory system), these were identified as persistent physical symptoms
  2. b p value for chi-square test