Table 1 Classification of eligible studies by design, target population, outcomes and quality score (1990-2009)
Author, year, reference # | Study Design | Total sample size | Target age group | Country & Setting of recruitment | Inclusion criteria: Normal or abnormal GT | Loss to follow-up rate % | Outcome assessment: Measured OR self-reported | Study Quality score1 |
|---|---|---|---|---|---|---|---|---|
*Barclay, 2008 [87] | RCT | 37 | 50-85 | UK: Single general practice | IGT or IFG | 19% | Measured weight, WC, FPG, lipids, self-reported exercise, 4-day food diary | 7 |
Greaves, 2008 [86] | RCT | 141 | 18+ | UK: 2 GP surgeries | NGT or IGT | 18% | Measured weight, WC and self-reported physical activity | 7 |
*Bo, 2007 [48] | RCT | 375 | 45-64 | Italy: Family physician GPs | Metabolic Syndrome | 11% | Self-reported FFQ & exercise; Measured FPG, insulin, weight, WC, lipids, CRP | 8 |
*Kosaka, 2005 [49] | RCT | 458 | Adult males 30+ | Japan: Hospital outpatient Clinic | IGT | 15.9% | Measured FPG, OGTT, HbA1c, measured weight, lipids | 7 |
Torgerson, 2004 [80] | RCT | 3,304 | 30-60 | Sweden: Medical centres | NGT & IGT | 57% overall; 48% on medication & 66% on placebo | Measured weight, WC, FPG, lipids, serum insulin, fibrinogen | 7 |
*Dyson, 1997 [50] | RCT | 227 | 40-60 | UK, France: 5 Hospitals | IFG | 11% | FPG, OGTT, HbA1c, lipids, measured weight, max O2 uptake, self-reported 3-day food record & physical activity log | 7 |
Whittemore, 2009 [78] | CLU | 58 | 21+ | USA: Primary care practices | NGT & IGT | 12% | Self-reported exercise and nutrition Measured weight, WC, insulin resistance, lipids | 7 |
McTigue, 2009 [84] | BAC | 166 | 20-79 | USA: Primary care practices | Obese, NGT or diabetic | 7% | Measured weight | 5 |
Eriksson, 1991 [79] | BAC | 181 | 47-49 | Sweden: Borderline diabetes clinic | NGT & IGT | 22.8% | Self-reported exercise, max O2 uptake, FPG, OGTT, lipids, measured weight, skinfold, mortality | 7 |
Pagoto, 2008 [14] | B-A | 118 | Middle age | USA: Academic medical center | Metabolic syndrome, NGT or diabetic | 17% | Measured weight, BP, | 3 |
Laatikainen, 2007 [83] | B-A | 311 | 40-75 | Australia: General practices | NGT & IGT | 23.8% | Self-reported FFQ, SF-36, K10; Measured FPG, 2 hr PG, WC, weight, lipids | 7 |
B-A | 352 | 50-65 | Finland: Primary health care centres | NGT & IGT | 9.4% | Self-reported 3-day food diary, physical activity, Measured weight, WC, FPG, lipids | 7 |