Abstract
A sequential mixed-mode data collection, online-to-telephone, was introduced into the National Child Development Study for the first time at the study's age 55 sweep in 2013. The study included a small experiment, whereby a randomised subset of study members was allocated to a single mode, telephone-only interview, in order to test for the presence of mode effects on participation andmeasurement. Relative to telephone-only, the offer of theWeb increased overall participation rates by 5.0 percentage points (82.8% vs. 77.8%;95% confidence interval for difference: 2.7% to 7.3%). Differences attributable to mode of interview were detected in levels of item non-response and response values for a limited number of questions. Most notably, response by Web (relative to telephone) was found to have increased the likelihood of non-response to questions relating to pay and other financialmatters, and increased the likelihood of `less desirable' responses. For example, response by Web resulted in the reporting of more units of alcohol consumed, and more negative responses to subjective questions such as self-rated health, self-rated financial status and well-being. As there was evidence of mode effects, there is the potential for biases in some analyses, unless appropriate techniques are utilised to correct for these.
| Item Type: | Journal article |
|---|---|
| Faculties: | Mathematics, Computer Science and Statistics > Statistics |
| Subjects: | 500 Science > 510 Mathematics |
| ISSN: | 0964-1998 |
| Language: | English |
| Item ID: | 110999 |
| Date Deposited: | 02. Apr 2024, 07:22 |
| Last Modified: | 02. Apr 2024, 07:22 |
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