Bibliographics
- Author(s):
- Siegler, I.C.
- Title:
- Threats to External Validity in Survey Research with the Elderly: The Effects of Selective Drop-out on Health, Morale, Social Relations and Environmental Circumstances.
- Source:
- PhD Dissertation, Syracuse University, 1974, USA
- Year:
- 1974
- Language:
- English (Australia, Canada, UK, USA)
Subject Classification
- Subjects
-
-
Eligible for inclusion in findings archive
- Eligible
- No, no valid measure of happiness used.