| Table 4: Difference between WMSD reported by respondents who receive calls with hand held phones and headsets | |||||||
| Body parts | 12-month prevalence | 7-day prevalence | |||||
| Handset, n (%) | Headset, n (%) | p value | Handset, n (%) | Headset, n (%) | p value | ||
| Neck | 73 (47.9) | 278 (51.1) | 0.634 | 29 (39.2) | 74 (26.5) | 0.033 | |
| Shoulder | 21 (29.2) | 59 (21.6) | 0.177 | 14 (19.7) | 34 (12.1) | 0.095 | |
| Upper back | 73 (37.0) | 282 (27.3) | 0.105 | 19 (26.4) | 41 (14.5) | 0.017 | |
| Elbow | 11 (15.5) | 19 (6.8) | 0.020 | 7 (9.7) | 10 (3.6) | 0.030 | |
| Low back | 24 (33.3) | 90 (32.4) | 0.877 | 15 (20.3) | 50 (17.9) | 0.633 | |
| Wrist | 12 (16.4) | 54 (19.1) | 0.604 | 7 (9.5) | 17 (6.0) | 0.310 | |
| Hips | 8 (11.0) | 34 (12.0) | 0.811 | 7 (9.5) | 19 (6.7) | 0.423 | |
| Knees | 7 (9.5) | 32 (11.3) | 0.657 | 5 (6.8) | 10 (3.5) | 0.221 | |
| Ankles | 8 (10.8) | 24 (8.5) | 0.526 | 7 (9.5) | 11 (3.9) | 0.058 | |
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