Table 2.

Delirium and occurrence of death and dementia

Outcome, statistic, and sample	No delirium group	Delirium group	Delirium episodes in landmark period
			0	1	2	≥3
Death
No of patients at risk
Total	55 211	55 211	43 826	30 181	7463	3628
Men	26 339	26 339	20 283	14 084	3215	1583
Women	28 872	28 872	23 543	16 097	4248	2045
No of events
Total	28 552	35 377	17 240	14 424	4466	2475
Men	14 140	17 403	8107	6823	1984	1116
Women	14 412	17 974	9133	7601	2482	1359
Person years of follow-up
Total	196 067.3	171 404.3	148 169.6	96 471.6	21 165.7	9338.7
Men	90 300.8	77 862	67 944.0	44 616.3	8815.0	3900.8
Women	105 766.5	93 542.3	80 225.6	51 855.3	12 350.6	5438.0
Incidence rate per 100 person years
Total	14.6	20.6	11.6	15.0	21.1	26.5
Men	15.7	22.4	11.9	15.3	22.5	28.6
Women	13.6	19.2	11.4	14.7	20.1	25.0
Dementia
No of patients at risk
Total	55 211	55 211	43 037	28 694	6646	2997
Men	26 339	26 339	19 970	13 484	2879	1319
Women	28 872	28 872	23 067	15 210	3767	1678
No of events
Total	5151	13 966	3871	6567	1979	1083
Men	2161	6219	1607	2979	846	487
Women	2990	7747	2264	3588	1133	596
Person years of follow-up
Total	189 598.3	151 842.2	142 331.2	85 378.6	17 177.4	6804.1
Men	87 873	70 195.7	65 782.6	40 250.6	7294.8	2918.5
Women	101 725.3	81 646.5	76 548.6	45 128.1	9882.6	3885.6
Incidence rate per 100 person years
Total	2.7	9.2	2.7	7.7	11.5	15.9
Men	2.5	8.9	2.4	7.4	11.6	16.7
Women	2.9	9.5	3.0	8.0	11.5	15.3

For delirium episodes in first 12 months of follow-up (landmark period), person years of follow-up was calculated as observation time subsequent to landmark period.