Table 2. Unadjusted and Adjusted Covariate Distributions for Survey Results.
| Variable | Readers US (Pew) | Readers US (UNU) | Editors US (UNU) | Editors US Adj. | Editors (UNU) | Editors Adj. |
| female | 49.0 | 39.9 | 17.8 | 22.7 | 12.7 | 16.1 |
| married | 60.1 | 44.1 | 30.9 | 36.3 | 33.2 | 38.4 |
| children | 36.0 | 29.4 | 16.4 | 27.6 | 14.4 | 25.3 |
| immigrant | 10.1 | 14.4 | 12.1 | 9.8 | 8.2 | 7.4 |
| student | 17.7 | 29.9 | 46.0 | 38.5 | 47.7 | 40.3 |
Comparison of results for the proportion of Wikipedia readers and editors from the nationally representative Pew survey and the WMF/UNU-MERIT survey (UNU) for a series of dichotomous variables in both surveys. Adjusted numbers for editors assume that response bias for editors is identical to observed response bias for readers and, in the rightmost column, that bias is stable for editors outside the United States.