Table 1.
Demographic characteristics of Alaska EARTH study participants (n=3680) who correctly self-reported a history of cancer, compared to 67 who incorrectly reported either that they had a cancer not recorded in the tumour registry (n=54) or who failed to report a cancer that was recorded in the registry (n=13)†
| “Correct” reporting |
“Incorrect” reporting |
|||||
|---|---|---|---|---|---|---|
| Alaska EARTH (all) n=3,747 | Alaska EARTH (no cancer and reported no cancer) n=3,594 | Alaska EARTH (had cancer and reported it) n=86 | Alaska EARTH (Reported cancer, but didn’t have it) n=54 | Alaska EARTH (had cancer but didn’t report it) n=13 |
p-Value | |
| Age (years, mean [SD])* | 40.3 (15.0) | 39.8 (14.7)a | 57.0 (13.5)b | 47.6 (13.3)c | 58.4 (13.3)b,c | <0.0001 |
| Sex (% female) | 2,181 (60.9) | 2,162 (60.2) | 64 (74.4) | 43 (79.6) | 12 (92.3) | 0.0001 |
| Educational attainment (% ≤12 years) | 2,193 (59.4) | 2,112 (59.6) | 49 (57.7) | 22 (40.7) | 10 (76.9) | 0.0218 |
| Residence (% rural) | 1,910 (51.0) | 1,852 (51.5) | 29 (33.7) | 20 (37.0) | 9 (69.2) | 0.0008 |
| Language (% English as the primary language at home) | 2,504 (67.1) | 2,405 (67.1) | 56 (66.7) | 40 (74.1) | 3 (23.1) | 0.0056 |
*For continuous variables, statistically significant differences between groups assessed using Tukey’s test, and indicated by different letters associated.
†Details for the full Alaska EARTH cohort (n=3,821) were previously reported by Redwood and colleagues [39].