Table 4.
Sociodemographic Characteristics (%) of Eligible Sample and Nonrespondents and Respondents before and after the Experiment.
| Sociodemographic Characteristics | A
|
B
|
C
|
D
|
E
|
E1
|
E2
|
F
|
|---|---|---|---|---|---|---|---|---|
| Total Eligible Sample (n = 7,230) | Non respondents before Experiment (n = 2,473) | Respondents before Experiment (n = 4,757) | Nonrespondents after Experiment (n = 2,033) | Respondents after Experiment (n = 440) | Respondents Sent US$0 (n = 92) | Respondents Sent US$5/US$10 (n = 348) | All Respondents (n = 5,197) | |
| Age | ||||||||
| <40 | 22.6 | 30.1 | 19.6 | 33.4 | 18.4 | 26.0 | 16.3 | 19.5 |
| 40–59 | 39.8 | 42.2 | 38.8 | 42.4 | 41.6 | 33.7 | 43.9 | 39.1 |
| 60+ | 37.6 | 27.7 | 41.6 | 24.2 | 39.9 | 40.3 | 39.8 | 41.4 |
| Years of education | ||||||||
| ≤12 | 39.4 | 44.5 | 37.3 | 44.8 | 43.4 | 34.9 | 45.8 | 37.8 |
| 13–15 | 23.0 | 24.2 | 22.5 | 23.9 | 25.3 | 28.4 | 24.5 | 22.7 |
| 16+ | 29.4 | 20.8 | 32.8 | 20.1 | 23.2 | 33.3 | 20.4 | 32.1 |
| Missing | 8.2 | 10.5 | 7.3 | 11.2 | 8.0 | 3.3 | 9.4 | 7.3 |
| Gender of the respondent | ||||||||
| Female | 52.5 | 47.5 | 54.6 | 44.5 | 57.9 | 58.8 | 57.7 | 54.9 |
| Male | 47.5 | 52.5 | 45.4 | 55.5 | 42.1 | 41.2 | 42.3 | 45.1 |
| Couple status | ||||||||
| In a couple | 56.6 | 48.2 | 60.0 | 46.3 | 54.7 | 50.6 | 55.8 | 59.6 |
| Single | 43.4 | 51.8 | 40.0 | 53.7 | 45.3 | 49.4 | 44.2 | 40.4 |
| Individual is PSID respondent | ||||||||
| Yes | 73.0 | 76.1 | 71.7 | 76.5 | 74.8 | 77.1 | 74.1 | 72.0 |
| No | 27.0 | 23.9 | 28.3 | 23.5 | 25.2 | 22.9 | 25.9 | 28.0 |
| Low-income oversample | ||||||||
| Yes | 6.2 | 9.0 | 5.1 | 10.1 | 5.3 | 5.0 | 5.4 | 5.1 |
| No | 93.8 | 91.0 | 94.9 | 89.9 | 94.7 | 95.0 | 94.6 | 94.9 |
| Initial assignment to web | 74.8 | 74.7 | 74.8 | 72.5 | 82.3 | 85.0 | 81.6 | 75.4 |
| Response mode is web | N/A | N/A | 74.5 | N/A | 21.6 | 21.0 | 21.7 | 70.1 |
Note: PSID = U.S. Panel Study of Income Dynamics. N/A = not applicable.