Table 1.
Characteristics of eight case-control studies.
| Author, Year, Country (Study Period), Source, [Reference No.] | Case Size | Controls Size | Age: Mean or Range | BMI Ascertainment | BMI Categories (kg/m2) | Effect Estimate a (95% CI) | Adjustments | NOS | |
|---|---|---|---|---|---|---|---|---|---|
| Men | Women | ||||||||
| Strom, 1995, Mexico and Bolivia (1984–1988) Hospital, [10] | 65 | 110 | 45–75 | Self-reported | <24.0 24.0–25.9 26.0–28.9 >28.0 |
Men and women 1.0 (reference) 1.5 (0.5–4.6) 2.2 (0.7–8.4) 1.6 (0.4–6.1) |
NA | Age, sex, country | 6 |
| Zatonski, 1997, Australia, Canada, The Netherlands and Poland (1983–1988) Population, [32] | 189 | 1479 | 62.7 m 64.2 f | Self-reported | Quartile 1 Quartile 2 Quartile 3 Quartile 4 |
1.0 (reference) 1.0 (0.3–3.0) 0.7 (0.3–2.0) 1.0 (0.3–2.8) |
1.00 (reference) 1.70 (0.90–3.10) 1.50 (0.80–3.00) 2.10 (1.20–3.80) |
Age, sex, center, education, alcohol, smoking, type of interview | 7 |
| Serra, 2002, Chile (1992–1995) Hospital, [31] | 114 | 114 | 65.8 m 70.6 f | Self-reported | <25.0 25.0–29.9 ≥30.0 |
Men and women 1.0 (reference) 0.8 (0.4–1.4) 0.9 (0.4–1.8) |
NA | Age, sex | 7 |
| Máchová, 2007, Czech (1987–2002) Population, [29] | 93 | 37772 | 30–64 | Measured | 18.5–24.9 25–30 ≥30.0 |
1.00 (reference) 1.01 (0.24–4.32) 0.76 (0.08–7.41) |
1.00 (reference) 1.07 (0.58–1.95) 0.73 (0.36–1.50) |
Age, smoking, height, hypertension | 8 |
| Hsing, 2008, China (1997–2001) Population, [28] | 365 | 959 | 34–74 | Self-reported | <18.5 18.5–22.9 23.0–24.9 ≥25 |
Men and women 0.62 (0.35–1.09) 1.0 (reference) 1.2 (0.85–1.68) 1.56 (1.17–2.10) |
NA | Age, sex, education | 6 |
| Grainge, 2009, United Kingdom (1987–2002) Population, [27] | 86 | 3007 | 72 | Measured | <25 25–29.9 ≥30.0 |
Men and women 1.00 (reference) 1.03 (0.62–1.72) 1.51 (0.83–2.75) |
NA | Smoking, alcohol, NSAID use | 8 |
| Nakadaira, 2009, Hungary (2003–2006) hospital, [30] | 41 | 30 | 40–69 | NA | ≤24.9 25.0–29.9 ≥30.0 |
Men and women 1.00 (reference) 1.5 (0.4-5.0) 0.8 (0.3–1.8) |
NA | Age | 7 |
| Alvi, 2011, Pakistan (1988–2007) hospital, [12] | 60 | 120 | 18–75 | Measured | <23 >23 |
Men and women 1.00 (reference) 1.98 (0.62–6.28) |
NA | Sex, hypertension, diabetes, smoking | 7 |
NA data not applicable; m, male; f, female; a relative risks are rate ratios, odds ratios, or standardized incidence ratios.