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Table 2 Characteristics of the young men exposed to high altitude in Tibet, 2006-2009

From: Population level determinants of acute mountain sickness among young men: a retrospective study

Indicators Number Percent(%)
Demographic characteristics   
   Male 3727 100
   Age(y)   
< 18 133 4
18-20 2813 75
21-26 781 21
   Ethnicity   
Han (Chinese) 3472 93
Tibetan 87 2
Hui (Muslim) 168 5
   Birth province   
Northwest province 1544 41
Southwest province 1266 34
East province 917 25
   Education   
≤Junior high school 2060 55
= High school 1589 43
≥College 78 2
   BMI   
Normal 2892 78
Underweight 426 11
Overweight 409 11
   Rank   
Private 3173 85
NCO 433 12
Officer 121 3
Health behavior   
   Drinking alcohol   
Yes 1155 31
No 2572 69
   Cigarette smoking   
Yes 2242 60
No 1485 40
   Prophylaxis   
No 2360 63
Yes 1367 37
Travel profile   
   Start point altitude   
1300-1500 m 1449 39
900-1100 m 1074 29
600-800 m 1204 32
   Destination altitude   
2900-3100 m 1245 33
3600-3800 m 1221 33
4100-4300 m 1261 34
   Deployment type   
Normal by land 1706 46
Emergency by land 1142 31
Normal by air 500 13
Emergency by air 379 10
   Season   
Warm 2133 57
Cold 1594 43