Table 2. Descriptive statistics on raw values of vitamin E intake (mg per day) across studies and in all the studies combined (International Head and Neck Cancer Epidemiology (INHANCE) consortium).
| Study name | 20% | Median | Mean | 80% |
|---|---|---|---|---|
| Boston | 5.37 | 7.91 | 9.00 | 11.58 |
| Buffalo | 4.47 | 6.90 | 7.78 | 10.45 |
| Italy Multicenter | 10.16 | 14.08 | 15.17 | 19.31 |
| Japan (2001–2005) | 6.08 | 7.42 | 7.77 | 9.26 |
| Los Angeles | 4.46 | 6.50 | 7.51 | 9.42 |
| Milan (2006–2009) | 8.85 | 11.98 | 12.76 | 16.41 |
| MSKCC | 5.05 | 7.22 | 8.84 | 11.34 |
| North Carolina (2002–2006) | 4.95 | 7.29 | 8.04 | 10.64 |
| Switzerland | 9.73 | 12.90 | 13.49 | 16.84 |
| US Multicenter | 3.43 | 4.60 | 4.88 | 6.21 |
| All studies combined | 5.37 | 8.30 | 9.73 | 13.48 |
Abbreviation: MSKCC=Memorial Sloan Kettering Cancer Center.