Measurement invariance and adapted preferences: evidence for the ICECAP-A and WeRFree instruments

Table 3 Mean scale scores, associated standard deviations and standardized mean factor scores per subgroup per sample for the WeRFree instrument

Subsample	Reflective wellbeing			Affective wellbeing			Perceived access to options
Age	Mean	Standard deviation	Factor mean*	Mean	Standard deviation	Factor Mean*	Mean	Standard deviation	Factor mean*
18–24	62.01	19.01	Reference	63.61	20.23	Reference	87.51	14.82	Reference
25–34	62.57	19.50	0.000	64.04	19.46	0.012	84.90	16.89	-0.159
35–44	61.51	20.78	-0.061	64.32	20.64	0.006	80.63	19.94	-0.348
45–54	61.68	20.62	-0.059	66.46	21.08	0.101	77.07	21.22	-0.493
55–64	65.18	19.78	0.127	70.71	20.05	0.330	76.92	21.31	-0.514
65+	72.09	16.48	0.598	78.54	15.67	0.996	81.25	18.93	-0.340
Gender
Women	65.15	20.08	Reference	67.18	20.40	Reference	78.82	20.44	Reference
Men	64.64	19.43	-0.023	71.72	19.68	0.276	81.33	19.45	0.131
Education
High school	62.80	20.72	Reference	67.49	21.20	Reference	79.39	20.99	Reference
Some post-secondary, post-secondary certificate or diploma	64.93	19.49	0.117	69.52	20.03	0.118	79.40	20.01	0.084
University degree and higher	67.21	18.83	0.263	71.22	19.04	0.239	83.14	18.48	0.297
Health condition
Healthy public	71.17	15.99	Reference	77.70	14.27	Reference	93.01	9.27	Reference
Arthritis	66.10	19.18	-0.296	70.95	18.47	-0.416	70.63	20.51	-1.127
Asthma	65.34	18.24	-0.340	68.77	17.98	-0.541	82.13	18.41	-0.592
Cancer	65.39	19.53	-0.329	69.92	19.43	-0.435	75.44	20.93	-0.851
Depression	48.72	20.76	-1.167	46.31	20.19	-1.782	70.61	20.96	-1.112
Diabetes	63.04	20.70	-0.421	68.82	20.14	-0.488	77.04	21.08	-0.769
Hearing problems	68.72	18.21	-0.148	74.10	16.65	-0.245	85.05	15.54	-0.501
Heart problems	65.74	18.98	-0.318	71.60	19.64	-0.345	76.59	21.09	-0.794

ISSN: 1477-7525