From the paper:
The final variable with a significant relationship to AMS was the ingestion of analgesics, which included aspirin, acetaminophen, or nonsteroidal anti-inflammatory drugs. As in our summit study (27), analgesics use was associated with an increased risk of AMS; however, this finding is likely the result of trekkers with AMS taking analgesics to alleviate their symptoms rather than analgesics "causing" AMS.
Makes sense... if you're getting a headache, it's quite likely you will be taking something like ibuprofen, acetaminophen.
suptimwong: You're two nights at Horseshoe Meadows is the best AMS conditioning you can get!
