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Table 3 Comparison of Morbidity categories with age of the welders, duration of employment and daily welding hours (n = 300)

From: Morbidity patterns among the welders of eastern Nepal: a cross-sectional study

Morbidity categories

Number (%)

Age of the welders (years)

Duration of employment (years)

Welding Hours daily (Hours)

Mean ± SD

p-value*

Mean ± SD

p-value**

Mean ± SD

p-value*

Arc eye related symptoms

Yes

184 (61.3 %)

33.77 ± 5.93

<0.001

8.84 ± 5.59

<0.001

4.45 ± 0.91

<0.001

No

116 (38.7 %)

27.35 ± 5.55

3.92 ± 2.89

3.76 ± 0.87

Metal fume fever related symptoms

Yes

130 (43.3 %)

32.59 ± 6.41

0.003

8.21 ± 5.80

<0.001

4.42 ± 1.01

<0.05

No

170 (56.7 %)

30.29 ± 6.53

5.96 ± 4.67

4.01 ± 0.88

Asthma related symptoms

Yes

140 (46.7 %)

32.66 ± 6.85

0.001

8.11 ± 5.82

<0.001

4.38 ± 0.96

<0.05

No

160 (53.3 %)

30.09 ± 6.09

5.91 ± 4.56

4.01 ± 0.92

Skin problems related symptoms

Yes

223 (74.3 %)

32.28 ± 6.63

0.000

7.88 ± 5.58

<0.001

4.31 ± 0.94

<0.001

No

77 (25.7 %)

28.43 ± 5.53

4.19 ± 3.03

3.81 ± 0.88

Hearing problems related symptoms

Yes

107 (35.7 %)

36.55 ± 5.70

0.000

10.62 ± 6.28

<0.001

4.73 ± 0.85

<0.001

No

193 (74.3 %)

28.37 ± 5.03

4.90 ± 3.20

3.88 ± 0.87

Musculoskeletal problems related symptoms

Yes

140 (46.7 %)

30.96 ± 5.18

0.412

6.24 ± 3.45

0.882

4.21 ± 0.95

0.688

No

160 (53.3 %)

31.58 ± 7.59

7.55 ± 6.44

4.16 ± 0.96

Injuries

Yes

272 (90.7 %)

31.30 ± 6.60

0.949

7.04 ± 5.42

0.619

4.18 ± 0.96

0.847

No

28 (9.3 %)

31.21 ± 6.37

5.42 ± 3.89

4.21 ± 0.87

  1. * = t test, ** = Mann Whitney U test, Bold indicates p-value < 0.05, taken as significant