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. 2021 Jun 22;34(1):151–157. doi: 10.1007/s40520-021-01903-1

Table 1.

Composition of questionnaire by outcome and source

26 questions/statements Source (n = number of questions)
Six statements on sleep quality Domus Medica guideline sleep disorders (9)
Ten statements on mental wellbeing

Bel Rai (11)

OPQOL-35 (12)

RAND 36 (13)

Four statements on pain complaints Bel Rai (10)
Six statements + two questions + two tasks to assess cognitive functioning

IQCODE-N (14)

NHG guidelines dementia (15)