From: Population level determinants of acute mountain sickness among young men: a retrospective study
Indicators | Â | Odd years | (n = 1769) | Â | Even years | (n = 1958) | ||
---|---|---|---|---|---|---|---|---|
 | β | AOR | 95%CI | p-value | β | AOR | 95%CI | p-value |
Demographic indicators | Â | Â | Â | Â | Â | Â | Â | Â |
   Ethnicity |  |  |  |  |  |  |  |  |
Han (Chinese) (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
Tibetan | -3.39 | 0.03 | 0.01-0.25 | 0.001 | -2.55 | 0.08 | 0.02-0.33 | 0.001 |
Hui | -0.29 | 0.75 | 0.43-1.31 | 0.309 | 0.06 | 1.06 | 0.66-1.69 | 0.810 |
   Birth province |  |  |  |  |  |  |  |  |
Northwest province (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
Southwest province | -0.04 | 0.96 | 0.75-1.24 | 0.758 | 0.18 | 1.19 | 0.94-1.51 | 0.149 |
East province | 0.33 | 1.39 | 1.07-1.81 | 0.015 | 0.28 | 1.32 | 1.02-1.70 | 0.034 |
Health behavior | Â | Â | Â | Â | Â | Â | Â | Â |
   Prophylaxis |  |  |  |  |  |  |  |  |
No (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
Yes | -0.29 | 0.75 | 0.60-0.93 | 0.008 | -0.28 | 0.76 | 0.60-0.94 | 0.014 |
Travel indicators | Â | Â | Â | Â | Â | Â | Â | Â |
   Start point altitude |  |  |  |  |  |  |  |  |
1300-1500 m (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
900-1100 m | 0.21 | 1.23 | 0.94-1.62 | 0.136 | 0.19 | 1.20 | 0.94-1.54 | 0.135 |
600-800 m | 0.36 | 1.44 | 1.11-1.85 | 0.005 | 0.28 | 1.32 | 1.03-1.68 | 0.026 |
   Destination altitude |  |  |  |  |  |  |  |  |
2900-3100 m (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
3600-3700 m | 1.00 | 2.71 | 2.03-3.62 | < 0.001 | 1.01 | 2.74 | 2.11-3.56 | < 0.001 |
4100-4300 m | 1.42 | 4.12 | 3.10-5.46 | < 0.001 | 1.37 | 3.94 | 3.04-5.11 | < 0.001 |
   Deployment type |  |  |  |  |  |  |  |  |
Normal by land (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
Emergency by land | 0.75 | 2.11 | 1.65-2.70 | < 0.001 | 0.73 | 2.08 | 1.64-2.64 | < 0.001 |
Normal by air | 0.69 | 2.00 | 1.44-2.76 | < 0.001 | 0.79 | 2.20 | 1.62-2.98 | < 0.001 |
Emergency by air | 0.88 | 2.40 | 1.66-3.46 | < 0.001 | 1.21 | 3.34 | 2.41-4.65 | < 0.001 |
   Travel season |  |  |  |  |  |  |  |  |
Warm (ref.) | Â | 1.00 | Â | Â | Â | 1.00 | Â | Â |
Cold | 0.25 | 1.28 | 1.04-1.59 | 0.022 | 0.22 | 1.25 | 1.02-1.53 | 0.034 |