Device Used to Complete the Web Individual Questionnaire by Experimental Group
| . | Web-only period . | End of the fieldwork . | ||||
|---|---|---|---|---|---|---|
| Control (n = 125) . | Any SMS (n = 385) . | Chi-squared test . | Control (n = 154) . | Any SMS (n = 440) . | Chi-squared test . | |
| Device used to complete the individual web interview | ||||||
| Smartphone | 38.1 | 44.4 | (2) = 16.84 | 37.7 | 45.3 | (2) = 17.33 |
| (5.6) | (3.3) | (2.0, 709.1) = 1.65 | (5.2) | (3.1) | (2.0, 735.7) = 1.90 | |
| Tablet | 15.4 | 8.4 | p = .192 | 14.9 | 8.4 | p = .150 |
| (4.0) | (2.0) | (3.5) | (1.8) | |||
| PC or laptop | 46.4 | 47.2 | 47.4 | 46.4 | ||
| (5.5) | (3.4) | (5.2) | (3.2) | |||
| . | Web-only period . | End of the fieldwork . | ||||
|---|---|---|---|---|---|---|
| Control (n = 125) . | Any SMS (n = 385) . | Chi-squared test . | Control (n = 154) . | Any SMS (n = 440) . | Chi-squared test . | |
| Device used to complete the individual web interview | ||||||
| Smartphone | 38.1 | 44.4 | (2) = 16.84 | 37.7 | 45.3 | (2) = 17.33 |
| (5.6) | (3.3) | (2.0, 709.1) = 1.65 | (5.2) | (3.1) | (2.0, 735.7) = 1.90 | |
| Tablet | 15.4 | 8.4 | p = .192 | 14.9 | 8.4 | p = .150 |
| (4.0) | (2.0) | (3.5) | (1.8) | |||
| PC or laptop | 46.4 | 47.2 | 47.4 | 46.4 | ||
| (5.5) | (3.4) | (5.2) | (3.2) | |||
Note.—Analyses are based on individuals completing the survey online during the 5-week web-only period (left) and all respondents completing online (right). Differences in the distributions were tested using a chi-squared test with the second-order Rao and Scott correction.
Device Used to Complete the Web Individual Questionnaire by Experimental Group
| . | Web-only period . | End of the fieldwork . | ||||
|---|---|---|---|---|---|---|
| Control (n = 125) . | Any SMS (n = 385) . | Chi-squared test . | Control (n = 154) . | Any SMS (n = 440) . | Chi-squared test . | |
| Device used to complete the individual web interview | ||||||
| Smartphone | 38.1 | 44.4 | (2) = 16.84 | 37.7 | 45.3 | (2) = 17.33 |
| (5.6) | (3.3) | (2.0, 709.1) = 1.65 | (5.2) | (3.1) | (2.0, 735.7) = 1.90 | |
| Tablet | 15.4 | 8.4 | p = .192 | 14.9 | 8.4 | p = .150 |
| (4.0) | (2.0) | (3.5) | (1.8) | |||
| PC or laptop | 46.4 | 47.2 | 47.4 | 46.4 | ||
| (5.5) | (3.4) | (5.2) | (3.2) | |||
| . | Web-only period . | End of the fieldwork . | ||||
|---|---|---|---|---|---|---|
| Control (n = 125) . | Any SMS (n = 385) . | Chi-squared test . | Control (n = 154) . | Any SMS (n = 440) . | Chi-squared test . | |
| Device used to complete the individual web interview | ||||||
| Smartphone | 38.1 | 44.4 | (2) = 16.84 | 37.7 | 45.3 | (2) = 17.33 |
| (5.6) | (3.3) | (2.0, 709.1) = 1.65 | (5.2) | (3.1) | (2.0, 735.7) = 1.90 | |
| Tablet | 15.4 | 8.4 | p = .192 | 14.9 | 8.4 | p = .150 |
| (4.0) | (2.0) | (3.5) | (1.8) | |||
| PC or laptop | 46.4 | 47.2 | 47.4 | 46.4 | ||
| (5.5) | (3.4) | (5.2) | (3.2) | |||
Note.—Analyses are based on individuals completing the survey online during the 5-week web-only period (left) and all respondents completing online (right). Differences in the distributions were tested using a chi-squared test with the second-order Rao and Scott correction.
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