Association of the overlap of cognitive impairment and depression with 6-month mortality in hospitalized older adults: results from the Re.Po.SI register

Table 3 Incidence rates (IR) of death (per 100 people/year) for variable with mutually exclusive classes between cognitive impairment and depression

	Unweighted IR (95% CI)	Weighted IR (95% CI)
No cognitive impairment, no depression	43.4 (29.9–62.7)	41.1 (28.6 – 59.2)
No cognitive impairment, depression	55.9 (37.1 – 84.6)	54.0 (36.5 – 80.3)
Cognitive impairment, no depression	81.1 (57.9 – 115.0)	89.0 (65.0 – 123.0)
Cognitive impairment, depression	68.9 (49.2 – 97.3)	73.9 (53.8 – 102.0)

The weighted incidence rates (IR) and their confidence intervals (CI) was calculated by dividing the age variable into quintiles. This approach ensures that the age distribution was evenly represented across different groups, providing a more accurate comparison of IR

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