Table 1.
Descriptive statistics on raw values of vitamin C intake (mg/day) across studies and in all the studies combined. International Head and Neck Cancer Epidemiology (INHANCE) consortium.
| Study name | 20% | Median | Mean | 80% |
|---|---|---|---|---|
| Boston | 67.95 | 122.00 | 135.60 | 190.95 |
| Buffalo | 95.93 | 168.90 | 188.00 | 263.44 |
| Italy Multicenter | 82.34 | 128.10 | 141.30 | 189.85 |
| Japan (2001–2005) | 60.26 | 86.60 | 91.45 | 118.65 |
| Los Angeles | 43.78 | 70.53 | 82.51 | 120.72 |
| Milan (2006–2009) | 78.63 | 124.80 | 139.40 | 192.46 |
| MSKCC | 76.08 | 133.30 | 148.40 | 208.34 |
| North Carolina (2002–2006) | 74.95 | 118.90 | 128.80 | 174.62 |
| Switzerland | 61.24 | 102.00 | 133.80 | 190.35 |
| US Multicenter | 77.48 | 145.80 | 166.80 | 231.37 |
| All studies combined | 68.08 | 113.70 | 133.40 | 183.97 |
ABBREVIATIONS: MSKCC: Memorial Sloan Kettering Cancer Center.