Costs and effects of comprehensive geriatric assessment in primary care for older adults with high risk for hospitalisation

Table 2 Results for primary and secondary outcomes of healthcare use comparing intervention group and control group from 1 Jan 2018 until 31 Dec 2019

Outcomes	Group	No. of events/No. of participants	Event rates	Absolute risk-reduction	Relative risk-reduction (95% CI)^a	P value
Total number of hospital care days	Intervention	5500/646	8.5	−1.8	−22% (−35% to − 4%)	0.02
Total number of hospital care days	Control	6833/662	10.3
-No. of hospital care episodes	Intervention	922/646	1.4	−0.3	−17% (−30% to −2%)	0.03
-No. of hospital care episodes	Control	1109/662	1.7
Total Number of visits	Intervention	28,325/646	43.8	−0.7	−4% (−15 to 8%)	0.50
Total Number of visits	Control	29,471/662	44.5
-No. of primary care visits	Intervention	16,500/646	25.5	0.9	0% (−20 to 26%)	0.99
-No. of primary care visits	Control	16,300/662	24.6
-No. of emergency room visits	Intervention	1512/646	2.3	−0.3	−10% (−23 to 5%)	0.20
-No. of emergency room visits	Control	1718/662	2.6
-No. of other outpatient care visits	Intervention	10,315/646	16.0	−1.3	−10% (−25 to 8%)	0.25
-No. of other outpatient care visits	Control	11,444/662	17.3

^aRelative risk reductions were analysed with mixed models using primary care centres as random intercept. All models were estimated by a negative binomial distribution with a log link and were adjusted for risk score, age and gender. CI Confidence interval. Significant results are marked with bold text

ISSN: 1471-2318