Table 2.
Source | Selection bias | Information bias | Confounding | Appropriate sample size | Appropriate analytic strategies |
---|---|---|---|---|---|
Emtner M et al. 1998 |
Low risk |
Low risk |
Low risk |
Unclear risk |
Appropriate |
Emtner M et al. 1996 |
Low risk |
Low risk |
Low risk |
Unclear risk |
Appropriate |
Engstom I, et al. 1991 |
Unclear risk |
Low risk |
Low risk |
Unclear risk |
Appropriate |
Juvonen R, et al. 2008 |
Low risk |
Low risk |
Low risk |
Unclear risk |
Appropriate |
Newcomb, P. et al. 2012 |
Unclear risk |
Low risk |
Low risk |
Unclear risk |
Appropriate |
Nickerson BG et al., 1983 |
Low risk |
Low risk |
Low risk |
Unclear risk |
Appropriate |
Silva PL, et al. 2011 | Low risk | Low risk | Low risk | Low risk | Appropriate |