Table 3.
Number of food items and portion size reported by each study within the Bladder cancer Epidemiology and Nutritional Determinants study (BLEND)
| Study | Food items (n) | Portion size |
|---|---|---|
| Case–control studies | ||
| Los-Angeles bladder cancer Case–control study [10] | 49 | Yes |
| Roswell Park Cancer Institute [11] | 44 | Yes |
| Belgian Case–control study on bladder cancer [12] | 788 | Yes |
| Aichi Prefecture Case–control study [13] | 107 | Yes |
| Kaohsiung [14] | 41 | Yes |
| Hessen Case–control study on bladder cancer [15] | 26 | No |
| Stockholm Case–control study [16] | 188 | Yes |
| Roswell Park Memorial Institute Case–control study on bladder cancer [17] | 64 | Yes |
| Reina Sofia University [18] | 17 | No |
| New Hampshire bladder cancer study [19] | 121 | Yes |
| Italian Case–control study on bladder cancer [20] | 21 | No |
| Brescia bladder cancer study [21] | 40 | Yes |
| Dortmund Hörde study [22] | 3 | Yes |
| National Enhanced Cancer Surveillance System (NESCC) [23] | 69 | Yes |
| French INSERM study [24] | 2 | No |
| South and East China Case–control study on bladder and prostate cancer [25] | 52 | No |
| Molecular Epidemiology of Bladder Cancer and Prostate Cancer [26] | 90 | Yes |
| North Carolina case control study [27] | 9 | No |
| Cohort studies | ||
| Swedish Mammography Cohort (SMC) & the Cohort of Swedish Men [28] | 96 | No |
| Netherlands Cohort Study on diet and cancer, the Netherlands, 1986–2003 [29] | 150 | Yes |
| Women’s Lifestyle and Health Study [30] | 98 | Yes |
| RERF atomic bomb survivors Study [31] | 102 | No |
| Vital study [32] | 126 | Yes |
| European Prospective Investigation into Cancer and Nutrition (EPIC) [33, 34] | 260a | Yes |
aDietary intake was assessed by a number of different instruments in the participating countries and the number of different food items varied from 88 (Norway) to 2443 (Sweden)