Catquest-9SF functioning over a decade – a study from the Swedish National Cataract Register

Table 4 Number of completed questionnaires, questionnaire precision (person separation and person reliability) and targeting

Year	N (completed questionnaires)	Person separation	Person reliability	Targeting: person mean score (item = 0)
2008	1690	2.57	0.87	−1.92
2009	6046	2.67	0.88	−1.87
2010	7630	2.68	0.88	−1.81
2011	7028	2.72	0.88	−1.69
2012	7432	2.61	0.87	−1.87
2013	7332	2.54	0.87	−2.07
2014	9202	2.58	0.87	−2.08
2015	8968	2.57	0.87	−2.10
2016	8944	2.54	0.87	−2.19
2017	10,624	2.55	0.87	−2.16
2018	9150	2.45	0.86	−2.31

ISSN: 2326-0254