Table 2. Comparison of SF-36 for underground miners and ground workers.
| Ground worker (n=354) | Underground miner (n=612) | t | P | ||||
|---|---|---|---|---|---|---|---|
| M | SD | M | SD | ||||
| PHC | 296.66 | 64.19 | 289.58 | 69.69 | 1.563 | 0.118 | |
| PF | 88.31 | 12.51 | 87.51 | 12.69 | 0.941 | 0.347 | |
| RP | 77.49 | 34.27 | 70.88 | 37.46 | 2.792 | 0.005 | |
| BP | 72.92 | 12.28 | 71.61 | 19.11 | 1.038 | 0.300 | |
| GH | 57.94 | 21.54 | 59.58 | 21.46 | 1.144 | 0.253 | |
| MHC | 286.83 | 71.27 | 280.68 | 74.83 | 1.249 | 0.212 | |
| VT | 68.43 | 16.98 | 66.14 | 18.68 | 1.945 | 0.052 | |
| SF | 80.95 | 19.64 | 80.94 | 20.03 | 0.004 | 0.997 | |
| RE | 70.95 | 40.19 | 67.59 | 41.18 | 1.231 | 0.218 | |
| MH | 66.50 | 17.22 | 66.01 | 16.93 | 0.426 | 0.670 | |
| Total score | 583.49 | 123.80 | 570.26 | 132.43 | 1.529 | 0.127 | |
SF-36, 36-item Short-Form Health Survey; PF, physical function; RP, physical health problems; BP, bodily pain; GH, general heath; VT, vitality; SF, social function; RE, emotional problems; MH, mental health; PHC, physical health components; MHC, mental health components; M, means; SD, standard deviation.