Review Article
Relationship between Smoking and Acute Mountain Sickness: A Meta-Analysis of Observational Studies
Table 1
Characteristics of included studies according to Newcastle-Ottawa Quality Assessment Scale.
| Study | Selection | Comparability | Exposure/ outcome | NOS scale |
| Wu et al., 2012 | | | | 6 | Li et al., 2011 | | | | 7 | Wagner et al., 2008 | | | | 5 | You et al., 2012 | | | | 7 | Vinnikov et al., 2014 | | | | 6 | McDevitt et al., 2014 | | | | 5 | Mairer et al., 2009 | | | | 5 | Mairer et al., 2010 | | | | 5 | Mairer et al., 2010 | | | | 5 | Schneider et al., 2001 | | | | 5 | Schneider et al., 2001 | | | | 5 |
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Note. Each star represents a high-quality criterion accomplished by the study.
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