The challenge of recruiting control groups. An experiment of different recruitment models in the control group of a clinical psychological postal survey
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References listed on IDEAS
- Hariga, Moncer & Ben-Daya, Mohamed, 1999. "Some stochastic inventory models with deterministic variable lead time," European Journal of Operational Research, Elsevier, vol. 113(1), pages 42-51, February.
- Ouyang, Liang-Yuh & Wu, Kun-Shan, 1998. "A minimax distribution free procedure for mixed inventory model with variable lead time," International Journal of Production Economics, Elsevier, vol. 56(1), pages 511-516, September.
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KeywordsControl group recruitment; Psychological surveys; Response-rates; Data quality; Age effects;
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