From: Population level determinants of acute mountain sickness among young men: a retrospective study
Indicators | Total number of young men | Number of diagnosed AMS cases(%) | β | OR | 95%CI | p-value |
---|---|---|---|---|---|---|
Demographic characteristic | Â | Â | Â | Â | Â | Â |
   Age | -- | -- | -0.01 | 0.99 | 0.92-1.07 | 0.781 |
   Ethnicity |  |  |  |  |  |  |
Han (Chinese) (ref.) | 1654 | 545(24.6) | Â | 1.00 | Â | Â |
Tibetan | 44 | 1(1.2) | -3.05 | 0.05 | 0.01-0.34 | 0.003 |
Hui (Muslim) | 71 | 20(19.6) | -0.23 | 0.80 | 0.47-1.35 | 0.401 |
   Birth province |  |  |  |  |  |  |
Northwest province (ref.) | 726 | 228(22.9) | Â | 1.00 | Â | Â |
Southwest province | 595 | 176(21.0) | -0.09 | 0.92 | 0.72-1.16 | 0.474 |
East province | 448 | 162(28.3) | 0.21 | 1.24 | 0.97-1.59 | 0.093 |
   Education |  |  |  |  |  |  |
≤Junior high school (ref.) | 981 | 310(23.1) |  | 1.00 |  |  |
= High school | 746 | 244(24.3) | 0.05 | 1.05 | 0.86-1.29 | 0.625 |
≥College | 42 | 12(20.0) | -0.14 | 0.87 | 0.44-1.71 | 0.679 |
   BMI |  |  |  |  |  |  |
Normal | 1375 | 449(32.7) | Â | Â | Â | Â |
Underweight | 215 | 60(27.9) | -0.23 | 0.80 | 0.58-1.10 | 0.166 |
Overweight | 179 | 57(31.8) | -0.04 | 0.96 | 0.69-1.35 | 0.828 |
   Rank |  |  |  |  |  |  |
Private (ref.) | 1507 | 487(23.9) | Â | 1.00 | Â | Â |
NCO | 204 | 59(20.3) | -0.16 | 0.85 | 0.62-1.18 | 0.329 |
Officer | 58 | 20(26.3) | 0.10 | 1.10 | 0.63-1.91 | 0.729 |
Health behavior | Â | Â | Â | Â | Â | Â |
   Alcohol drinking |  |  |  |  |  |  |
Yes (ref.) | 538 | 174(23.9) | Â | 1.00 | Â | Â |
No | 1231 | 392(23.4) | -0.02 | 0.98 | 0.79-1.21 | 0.836 |
   Cigarette smoking |  |  |  |  |  |  |
Yes (ref.) | 1052 | 354(25.4) | Â | 1.00 | Â | Â |
No | 717 | 212(21.0) | -0.19 | 0.83 | 0.67-1.02 | 0.071 |
   Prophylaxis |  |  |  |  |  |  |
No (ref.) | 998 | 341(26.0) | Â | 1.00 | Â | Â |
Yes | 771 | 225(20.6) | -0.23 | 0.79 | 0.65-0.97 | 0.026 |
Travel profile | Â | Â | Â | Â | Â | Â |
   Start point altitude |  |  |  |  |  |  |
1300-1500 m (ref.) | 606 | 166(18.9) | Â | 1.00 | Â | Â |
900-1100 m | 511 | 163(23.4) | 0.22 | 1.24 | 0.96-1.61 | 0.100 |
600-800 m | 652 | 237(28.6) | 0.41 | 1.51 | 1.19-1.92 | 0.001 |
   Destination altitude |  |  |  |  |  |  |
2900-3100 m (ref.) | 558 | 91(19.5) | Â | 1.00 | Â | Â |
3600-3700 m | 587 | 202(26.2) | 0.99 | 2.69 | 2.03-3.57 | < 0.001 |
4100-4300 m | 624 | 273(38.9) | 1.38 | 3.99 | 3.03-5.25 | < 0.001 |
   Deployment type |  |  |  |  |  |  |
Normal by land (ref.) | 797 | 118(15.4) | Â | 1.00 | Â | Â |
Emergency by land | 566 | 216(30.9) | 0.69 | 2.00 | 1.58-2.53 | < 0.001 |
Normal by air | 240 | 90(30.0) | 0.66 | 1.94 | 1.43-2.65 | < 0.001 |
Emergency by air | 166 | 72(38.3) | 0.91 | 2.48 | 1.75-3.51 | < 0.001 |
   Travel season |  |  |  |  |  |  |
Warm (ref.) | 998 | 301(21.6) | Â | 1.00 | Â | Â |
Cold | 771 | 265(26.2) | 0.19 | 1.21 | 0.99-1.48 | 0.060 |