Table 1. Demographics: US Census (2010) and survey sample.
| Demographic | Category | US Census | Panel | Survey Sample | Sample vs Census | Sample vs Panel |
|---|---|---|---|---|---|---|
| % | % | % | p | p | ||
| Age (years) | 18–24 | 13.1 | 10.0 | 9.8 | 0.02 | 0.88 |
| 25–34 | 17.5 | 24.0 | 15.8 | 0.31 | 0.000006* | |
| 35–44 | 17.5 | 21.0 | 16.9 | 0.72 | 0.02 | |
| 45–54 | 19.2 | 19.0 | 21.4 | 0.22 | 0.18 | |
| 55–64 | 15.6 | 16.0 | 14.1 | 0.35 | 0.23 | |
| 65–74 | 9.3 | 8.0 | 11.4 | 0.12 | 0.01 | |
| 75+ | 7.9 | 2.0 | 10.5 | 0.044 | 0.0000001* | |
| Region | Midwest | 21.7 | 22.0 | 24.4 | 0.15 | 0.20 |
| Northeast | 17.9 | 19.0 | 20.4 | 0.16 | 0.43 | |
| South | 37.1 | 35.0 | 31.1 | 0.005* | 0.064 | |
| West | 23.3 | 24.0 | 24.2 | 0.64 | 0.92 | |
| Income | <$25K | 24.9 | 12.2 | 13.6 | 0.00001* | 0.35 |
| $25K to <50K | 25.2 | 18.9 | 21.2 | 0.034 | 0.20 | |
| $50K to <$75K | 18.1 | 21.1 | 23.5 | 0.003* | 0.20 | |
| $75K to <100K | 11.5 | 16.7 | 18.5 | 0.0001* | 0.29 | |
| $100K to <$150K | 11.9 | 17.8 | 14.7 | 0.07 | 0.06 | |
| $150K+ | 8.2 | 13.3 | 8.6 | 0.75 | 0.0008* |
* Statistically significant p-value based on chi-square test with Bonferroni correction.