. 2021 Jun 7;21:349. doi: 10.1186/s12877-021-02299-3

Table 3.

Risk of developing urinary tract infection and urosepsis according to the severity of frailty of participants

Outcomes	Events	Person-year	Incidence density*	Crude		Model A^&		Model B^#
Outcomes	Events	Person-year	Incidence density*	HR	95 % CI	HR	95 % CI	HR	95 % CI
Urinary tract infection
No FRAIL item	2,934	110,373.7	26.6	1	-	1	-	1	-
1 item	6,314	137,015.7	46.1	1.70	1.63–1.77^a	1.19	1.12–1.26^a	1.14	1.08–1.21^a
2 items	1,778	31,590.2	56.3	2.03	1.92–2.16^a	1.24	1.16–1.34^a	1.16	1.08–1.25^a
≥ 3 items	149	1,723.1	86.5	3.03	2.57–3.58^a	1.43	1.21–1.70^a	1.28	1.06–1.53^b
Per 1 item increase				1.45	1.41–1.49^a	1.11	1.08–1.15^a	1.07	1.04–1.11^a
Urinary tract infection with sepsis
No FRAIL item	699	110,869.5	6.3	1	-	1	-	1	-
1 item	1,910	138,441.3	13.8	2.20	2.02–2.40^a	1.07	0.95–1.19	1.004	0.90–1.12
2 items	559	31,917.7	17.5	2.80	2.51–3.13^a	1.13	0.98–1.29	1.005	0.88–1.15
≥ 3 items	53	1782.0	29.7	4.79	3.62–6.33^a	1.18	0.88–1.59	1.048	0.77–1.42
Per 1 item increase				1.68	1.60–1.76^a	1.06	0.995–1.13	1.008	0.95–1.07

^* per 1000 patient-year

^& Incorporating all variables in Table 1

^# Model A with competing risk analysis for mortality

^a p < 0.001

^b p < 0.01