Study | Dietary Behavior | Physical activity | Weight reduction | Internal validity (%) | External validity (%) |
---|---|---|---|---|---|
Physical activity | |||||
Hurling (2007) [21] | +a | 89 | 44 | ||
Marcus (2007) [22] | +b (6 months only, not maintained at 12 months) | 89 | 56 | ||
Spittaels (2007b) [24] | +b | 56 | 78 | ||
Steele (2007) [25] | (+)a | 89 | 44 | ||
Marshall (2003) [31] | (+)c(sub) (for those not active at baseline only) | 78 | 67 | ||
Napolitano (2003) [32] | +b | 67 | 44 | ||
Hager (2002) [34] | (+)d+e(sub) (for males only) | 56 | 39 | ||
Pinto (2002) [35] | +f (3 months only, not maintained at 6 months) | 67 | 67 | ||
Combined physical activity, dietary behavior &/or weight reduction | |||||
Booth (2008) [19] | (+) fat onlyf | (+)f | (+)f | 56 | 67 |
Cook (2007) [20] | (+)g (overall diet including fat) | (+)g | (+)g | 67 | 33 |
Spittaels (2007a) [23] | (+)dh | (+)dh & +dh(sub) | 78 | 72 | |
Vandelanotte (2005 & 2007) (6 month post-test) [27] | + fatb | +b | 44 | 56 | |
(2 yr follow-up) [26] | (+) fath | (+)h | |||
Winett (2007) [28] | + fibre, F&Vb | Mb | +b (3 months only, not maintained at 6 months) | 89 | 61 |
Hageman (2005) [29] | M-d | +/-d | 78 | 56 | |
Kypri (2005) [30] | + F&Vb | +b | 56 | 39 | |
Veverka (2003) [33] | ND | +b | 78 | 39 |