Table 3 Comparison of Work-related risk factors of WMSD among Domestic Gas Workers and Staff of Works Department (n = 100)
Variables | frequency (%) | χ2-score | p-value | ||
|---|---|---|---|---|---|
DGW (n = 50) | SWD (n = 50) | Total (n = 100) | |||
Work frequency (days/week) | |||||
  ≤ 4 | 0 (0) | 0 (0) | 0 (0) | 82.02 | < 0.001* |
 5 | 0 (0) | 45 (90) | 45 (45) |  |  |
 6 | 38 (76) | 3 (6) | 41 (41) |  |  |
 7 | 12 (24) | 2 (4) | 14 (14) |  |  |
Rest break (compliance) | |||||
 No | 48 (96) | 44 (88) | 92 (92) | 2.17 | 0.269 |
 Yes | 2 (4) | 6 (12) | 8 (8) |  |  |
Training on lifting technique | |||||
 No | 34 (68) | 5 (10) | 39 (39) | 96.24 | < 0.001* |
 Yes | 16 (32) | 45 (90) | 61(61) |  |  |
Duty shifts | |||||
 No | 45 (90) | 31(62) | 76 (76) | 10.75 | 0.002* |
 Yes | 5 (10) | 19 (38) | 24 (24) |  |  |
Use of PPE(face mask) | |||||
 No | 41(84) | 15(30) | 56(56) | 100.00 | < 0.001* |
 Yes | 9(18) | 35(70) | 44(44) |  |  |
Use of PPE(gloves) | |||||
 No | 41(84) | 1(2) | 42(42) | 96.09 | < 0.001* |
 Yes | 9(18) | 49(98) | 58(58) |  |  |
Exercise status | |||||
 No | 35 (70) | 21 (42) | 56 (56) | 7.95 | 0.005* |
 Yes | 15 (30) | 29 (58) | 44 (44) |  |  |