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Does the single-item self-rated health measure the same thing across different wordings? Construct validity study

Cullati, Stéphane ; Bochatay, Naike ; Rossier, Clémentine ; Guessous, Idris ; Burton‑Jeangros, Claudine ; Courvoisier, Delphine S.

In: Quality of Life Research, 2020, p. -

The self-rated health (SRH) item is frequently used in health surveys but variations of its form (wording, response options) may hinder comparisons between versions over time or across surveys. The objectives were to determine (a) whether three SRH forms are equivalent, (b) the form with the best construct validity and (c) the best coding scheme to maximize equivalence across forms.