“…The major measurement properties of the different tools are shown in Table 4. Sample sizes among the qualitative and mixed methods approaches varied between n=12 [58] and n=64 [64], while numbers were naturally much larger for the secondary data analyses (between n=2,814 [60] and n=25,180 [59]). Target groups varied widely, from adults in general [23,25,28,57,76], children under the age of two [64], young adults [59] and older adults [24,61,63] to adults with special conditions or characteristics [30-34, 56, 58] For the ICECAP-O, six articles reported on the intended target group of adults over 65 [35,36,40,65,66,71].…”