Table 2.
Reference | A | B | C | D | E | F |
---|---|---|---|---|---|---|
Dawson, Judge and Gerhart [53] | + | + | + | +/− | +/− | +/− |
Henskens et al. [58] | + | +/− | + | − | + | + |
Henwood et al. [59] | +/− | +/− | +/− | − | − | +/− |
Kruse et al. [60] | +/− | − | − | − | +/− | +/− |
Sondell, Rosendahl, Gustafson, Lindelöf and Littbrand [51] | + | + | − | − | − | + |
Tak, van Uffelen, Paw, van Mechelen and Hopman-Rock [52] | + | + | − | − | − | + |
Teri et al. [61] | + | + | + | − | − | + |
Yu and Kolanowski [62] | +/− | − | − | − | +/− | − |
+ strong; +/− moderate; − weak. A = selection bias; B = study design; C = confounders; D = blinding; E = data collection method; F = withdrawals and drop-outs.