Carbapenem-Resistant Klebsiella pneumoniae Infections among ICU Admission Patients in Central China: Prevalence and Prediction Model

Table 2

Distribution of cumulative risk factors for Klebsiella pneumoniae infected patients.

Number of risk factors	Number of patients, n (%)
	CRKP	CSKP	Total
Derivation cohort
0	0 (0)	7 (100)	7
1	0 (0)	21 (100)	21
2	0 (0)	20 (100)	20
3	11 (25.6)	32 (74.4)	43
4	14 (18.2)	63 (81.8)	77
5	19 (26.8)	52 (73.2)	71
6	25 (40.3)	37 (59.7)	62
7	28 (68.3)	13 (31.7)	41
8	37 (84.1)	7 (15.9)	44
9	54 (90)	6 (10)	60
10	26 (92.9)	2 (7.1)	28
11	15 (83.3)	3 (16.7)	18
12	9 (100)	0 (0)	9
13	6 (100)	0 (0)	6
Total	244 (48.1)	263 (51.9)	507
Validation cohort
0	0 (0)	5 (100)	5
1	0 (0)	7 (100)	7
2	0 (0)	10 (100)	10
3	4 (13.8)	25 (86.2)	29
4	7 (13.5)	45 (86.5)	52
5	10 (20.4)	39 (79.6)	49
6	13 (33.3)	26 (66.7)	39
7	19 (63.3)	11 (36.7)	30
8	27 (79.4)	7 (20.6)	34
9	40 (86.9)	6 (13.1)	46
10	15 (78.9)	4 (21.1)	19
11	6 (66.6)	3 (33.4)	9
12	4 (100)	0 (0)	4
13	2 (100)	0 (0)	2
Total	147 (43.9)	188 (56.1)	335

CRKP: carbapenem-resistant Klebsiella pneumoniae; CSKP: carbapenem susceptible Klebsiella pneumoniae.