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Table 1 Characteristics of welders and office workers in Akaki Kality sub-city, Addis Ababa, Ethiopia

From: Welding fume exposure and prevalence of chronic respiratory symptoms among welders in micro- and small-scale enterprise in Akaki Kality sub-city, Addis Ababa, Ethiopia: a comparative cross-sectional study

Response

Welders

Controls

Total

P value

n (%)

n (%)

n (%)

Age Group

Less than 25

80 (35.4)

57 (26.3)

137 (30.9)

0.038 *

More than 25

146 (64.6)

160 (73.7)

306 (69.1)

Educational Status

Primary and secondary

216 (95.6)

28 (12.9)

244 (55.1)

< 0.001*

College Education

10 (4.4)

189 (87.1)

199 (44.9)

Work Experience

Less than 5 Years

142 (62.8)

155 (71.4)

297 (67)

0.376

More than 5 Years

84 (37.2)

62 (28.6)

146 (33)

Respiratory Protective Equipment used

Fume proof

123 (60.3)

N/A

123 (60.3)

 

Non fume proof

81 (39.7)

N/A

81 (39.7)

Smoking Status

Ever Smoker

31 (10.6)

23 (10.6)

54 (12.2)

0.316

Non-Smoker

195 (86.5)

194 (89.4)

389 (87.8)

Alcohol Intake Status

Ever Consumer

88 (38.9)

45 (20.7)

133(30)

0.001*

Non-Consumer

138 (61.1)

172 (79.3)

310 (70)

Work-Related Medical Checkup

Yes

99 (43.8)

79 (36.4)

178 (40.2)

0.14

No

127 (56.2)

138 (63.6)

265 (59.8)

Working Hours in days

Up to 8 h

101 (44.7)

211 (97.1)

312 (79.4)

< 0.001*

More than 8 h

125 (55.3)

6 (4.6)

131 (29.6)

Safety Training

Yes

33 (15.5)

9 (4.3)

42 [10]

< 0.001*

No

180 (84.5)

199 (95.7)

379 (90)

Type of Welding Material

Shielded Metal Arc Work

216 (95.6)

N/A

216 (95.6)

 

Gas Metal Arc Work

10 (4.4)

N/A

10 (4.4)

 

Welding Machine Calibration

Yes

87 (38.2)

N/A

87 (38.2)

 

No

139 (61.8)

N/A

139 (61.8)

 

Welding Site

Outdoor

58 (25.7)

N/A

58 (25.7)

 

Indoor

78 (34.5)

N/A

78 (34.5)

 

Both

90 (39.8)

N/A

90 (39.8)

 
  1. Note n refers to number, % refers to percentage and N/A refers to not applicable; * statistically significant difference