Table 2 Comparison of the Prevalence of Work Related Musculoskeletal Disorders among Domestic Gas Workers and Staff of Works Department (n = 100)
Variable | frequency (%) | χ2-score | p-value | ||
|---|---|---|---|---|---|
DGW (n = 50) | SWD (n = 50) | Total (n = 100) | |||
General WMSD Prevalence | 43 (86) | 19 (38) | 62 (62) | 24.45 | < 0.001* |
Number of WMSD regions | |||||
 1 | 9 (18) | 12 (24) | 21 (21) | 39.16 | < 0.001* |
 2 | 10 (20) | 5 (10) | 15 (15) |  |  |
 3 | 13 (26) | 2 (4) | 15 (15) |  |  |
  > 4 | 12 (24) | 1 (2) | 13 (13) |  |  |
Regional WMSD Prevalence | |||||
 Neck WMSD | 2 (4) | 4 (8) | 6 (6) | 0.71 | 0.680 |
 Shoulder WMSD | 26 (52) | 6 (12) | 32 (32) | 18.38 | < 0.001* |
 Upper back WMSD | 18 (36) | 1 (2) | 19 (19) | 18.78 | < 0.001* |
 Elbow WMSD | 19 (38) | 4 (8) | 23 (23) | 12.71 | < 0.001* |
 Wrist/hand | 6 (12) | 2 (4) | 8 (8) | 2.71 | 0.269 |
 Lower back | 27 (54) | 1 (2) | 28 (28) | 33.53 | < 0.001* |
 Hips/thighs | 13 (26) | 10 (20) | 23 (23) | 0.51 | 0.640 |
 Knees | 4 (8) | 4 (8) | 8 (8) | 0.001 | 1.000 |
 Ankles/foot | 1 (2) | 2 (4) | 3 (3) | 0.34 | 1.000 |
Activity limitation | 8 (16) | 1 (2) | 9 (9) | 5.98 | 0.031* |
Has seen a physician in the last 1-year | 9 (18) | 2 (4) | 11(11) | 5.01 | 0.051 |
Pain intensity (NPRS) |  |  |  | 25.02 | < 0.001* |
 None | 9 (18) | 32 (64) | 41 (41) |  |  |
 Low (1–4) | 11 (22) | 4 (8) | 15 (15) |  |  |
 Moderate (5–6) | 25 (50) | 8 (16) | 33 (33) |  |  |
 High (7–10) | 5 (10) | 6 (12) | 11 (11) |  |  |