The Korean Journal of Healthcare-Associated Infection Control and Prevention

Table 4

Pooled means and percentiles of the distribution of device- utilization ratios, by number of hospital beds, from July 2019 through June 2020

Urinary catheter utilization ratio*
No. of hospital beds	No. of units	Urinary catheter-days	Patient-days	Pooled mean	95% CI	10%	25%	50%	75%	90%
≥ 900	53	246,155	283,130	0.87	0.869-0.871	0.76	0.83	0.90	0.94	0.97
700-899	57	275,130	318,514	0.86	0.859-0.861	0.76	0.83	0.90	0.95	0.98
500-699	56	251,042	356,649	0.70	0.698-0.702	0.75	0.84	0.90	0.95	0.97
300-499	74	265,617	314,746	0.84	0.839-0.841	0.68	0.76	0.85	0.94	0.97
200-299	100	233,552	314,770	0.74	0.738-0.742	0.57	0.73	0.86	0.94	0.98
All	340	1,271,496	1,587,809	0.80	0.799-0.801	0.69	0.79	0.88	0.94	0.97
Central line utilization ratio†
No. of hospital beds	No. of units	Central line-days	Patient-days	Pooled mean	95% CI	10%	25%	50%	75%	90%
≥ 900	53	194,553	283,130	0.69	0.688-0.692	0.41	0.52	0.71	0.82	0.92
700-899	57	182,522	318,514	0.57	0.568-0.572	0.38	0.48	0.58	0.71	0.84
500-699	56	165,209	356,649	0.46	0.458-0.462	0.29	0.48	0.60	0.68	0.74
300-499	74	143,670	314,746	0.46	0.458-0.462	0.19	0.34	0.47	0.57	0.67
200-299	100	100,394	314,770	0.32	0.318-0.322	0.06	0.18	0.33	0.48	0.59
All	340	786,348	1,587,809	0.50	0.499-0.501	0.18	0.35	0.50	0.65	0.78
Ventilator utilization ratio‡
No. of hospital beds	No. of units	Ventilator-days	Patient-days	Pooled mean	95% CI	10%	25%	50%	75%	90%
≥ 900	53	140,948	283,130	0.50	0.498-0.502	0.27	0.36	0.49	0.60	0.71
700-899	57	130,235	318,514	0.41	0.408-0.412	0.22	0.31	0.41	0.49	0.63
500-699	56	109,788	356,649	0.31	0.308-0.312	0.15	0.25	0.37	0.48	0.56
300-499	74	80,251	314,746	0.25	0.248-0.252	0.05	0.13	0.22	0.35	0.45
200-299	100	43,911	314,770	0.14	0.139-0.141	0.01	0.05	0.13	0.21	0.32
All	340	505,133	1,587,809	0.32	0.319-0.321	0.05	0.15	0.29	0.44	0.57

*Pooled mean=(No. of urinary catheter-days/No. of patient-days); †Pooled mean=(No. of central line-days/No. of patient-days); ‡Pooled mean=(No. of ventilator-days/No. of patient-days).

Abbreviations: UTI, urinary tract infection; BSI, bloodstream infection; PNEU, pneumonia; CI, confidence interval.

Korean J healthc assoc Infect Control Prev 2021;26:115~128 https://doi.org/10.14192/kjicp.2021.26.2.115