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Table 4 Factors associated with lung functions among textile workers

From: Assessment of respiratory dust exposure and lung functions among workers in textile mill (Thamine), Myanmar: a cross-sectional study

Variables Total FVC   FEV1 FEV1/FVC
Reduced
n (%)
OR
(95% CI)
Reduced
n (%)
OR
(95% CI)
Reduced
n (%)
OR
(95% CI)
Gender
 Male 19 6 (31.6) 1.00 6 (31.6) 1.00 2 (10.5) 1.00
 Female 188 70 (37.2) 1.29
(0.47–3.53)
65 (34.6) 1.15
(0.42–3.15)
6 (3.2) 0.28
(0.05–1.48)
Age
  < 40 years 109 35 (32.1) 1.00 34 (31.2) 1.00 3 (2.8) 1.00
  ≥ 40 years 98 41 (41.8) 1.52
(0.86–2.68)
37 (37.8) 1.34
(0.75–2.38)
5 (5.1) 1.90
(0.44–8.17)
Educational level a
  ≥ High school education level 124 41 (33.1) 1.00 39 (31.5) 1.00 4 (3.2) 1.00
  < High school education level 83 35 (42.2) 1.48
(0.83–2.62)
32 (38.6) 1.36
(0.76–2.45)
4 (4.8) 1.52
(0.36–6.25)
Current department
 Weaving 78 21 (26.9) 1.00 19 (24.4) 1.00 3 (3.8) 1.00
 Knitting 24 8 (33.3) 1.36
(0.51–3.64)
9 (37.5) 1.86
(0.70–4.94)
1 (4.2) 1.09
(0.11–10.96)
 Carding 13 4 (30.8) 1.21
(0.34–4.34)
4 (30.8) 1.38
(0.38–4.99)
0 (0.0) 0.00
 Spinning 40 16 (40.0) 1.81
(0.81–4.05)
13 (32.5) 1.49
(0.65–3.46)
2 (5.0) 1.32
(0.21–8.21)
 Twisting 40 21 (52.5) 3.00
(1.35–6.66) **
21 (52.5) 3.43
(1.53–7.69) **
1 (2.5) 0.64
(0.06–6.37)
 Opening 12 6 (50.0) 2.71
(0.79–9.35)
5 (41.7) 2.22
(0.63–7.81)
1 (8.3) 2.27
(0.22–23.83)
Service duration
  ≤ 5 years 54 8 (14.8) 1.00 10 (18.5) 1.00 0 (0.0)  
 6–10 years 54 24 (44.4) 4.60
(1.83–11.58) ***
21 (38.9) 2.80
(1.16–6.73) *
3 (5.6)  
 11–15 years 16 9 (56.3) 7.39
(2.14–25.56) **
7 (43.8) 3.42
(1.03–11.39) *
1 (6.3)  
  > 15 years 83 35 (42.2) 4.19
(1.76–9.98) ***
33 (39.8) 2.90
(1.29–6.56) **
4 (4.8)  
Smoking status
 No 199 74 (37.2) 1.00 70 (35.2) 1.00 8 (4.0)  
 Yes 8 2 (25.0) 0.56
(0.11–2.86)
1 (12.5) 0.26
(0.03–2.18)
0 (0.0)  
Respiratory symptoms
 Absent 98 20 (20.4) 1.00 22 (22.4) 1.00 5 (5.1) 1.00
 Present 109 56 (51.4) 4.12
(2.22–7.64) ***
49 (45.0) 2.82
(1.54–5.17) ***
3 (2.8) 0.53
(0.12–2.26)
Respirable dust exposure
 Acceptable 102 29 (28.4) 1.00 28 (27.5) 1.00 4 (3.9) 1.00
 Increased 105 47 (44.8) 2.04
(1.14–3.63) *
43 (41.0) 1.83
(1.02–3.29) *
4 (3.8) 0.97
(0.24–3.99)
  1. a Education level - categorized as ≥ high school education level (high school education, college/university, and graduate and above) and < high school education level (read and write, primary school education, and middle school education)
  2. * p < 0.05, **p < 0.01, *** p < 0.001