Table 1.
Number (%) of sample and deaths deleted by restrictions* in some studies of BMI and mortality.
| First author (reference) | Before restrictions: | After restrictions | Percentage of deaths deleted |
Percentage of sample deleted |
||
|---|---|---|---|---|---|---|
| Sample size |
Number of deaths |
Sample size | Number of deaths |
|||
| Ajani [68] | 85,078 | 2,856 | 37,292 | 680 | 76.2 | 56.2 |
| Baik [69] | 39,756 | 1,972 | Not shown | 635 | 67.8 | - |
| Berrington de Gonzalez [13] | 1,460,000 | 160,087 | Not shown | 34,709 | 78.3 | - |
| Calle [11] | 1,046,154 | 201,622 | 302,233 | 34,507 | 82.9 | 71.1 |
| Greenberg [70] | 12,457 | 606 | 3,916 | 73 | 88.0 | 68.6 |
| Manson [12] | 115,195 | 4,726 | Not shown | 531 | 88.8 | - |
| Park [42] | 183,211 | 35,664 | 69,141 | 7,264 | 79.6 | 62.3 |
| Park [71] | 16,471 | 2,609 | Not shown | 713 | 72.7 | - |
*
The exact restrictions vary from study to study. All but one excluded ever-smokers. Other restrictions may include deleting participants with pre-existing disease, participants who report recent weight loss, and variable numbers of years of follow-up