Skip to main content

Table 2 Risk of bias within cohort studies

From: Effect of physical training on airway inflammation in bronchial asthma: a systematic review

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