The antibiotic strategies during percutaneous nephrolithotomy in China revealed the gap between the reality and the urological guidelines

Table 3 Factors associated with multiple-dose of pre-PCNL antibiotics for UC-UM- patients in logistic regression analysis (N = 3345)

	N	Multiple dose		Bivariate analysis			Multivariable analysis
	N	n	%	OR	95% CI	P	OR	95% CI	P
Grade of affiliation to medical unit						0.908
Non-tertiary hospital	1035	744	71.9	1
Tertiary hospital	2310	1665	72.1	1.010	0.858–1.189
University hospital						0.505
No	1732	1256	72.5	1
Yes	1613	1153	71.5	0.950	0.817–1.105
Geographical area						0.004			0.004
North China	455	308	67.7	1
Southwest China	626	433	69.2	1.071	0.826–1.388	0.606	1.159	0.889–1.510	0.276
South China	581	408	70.2	1.126	0.864–1.467	0.382	1.242	0.945–1.632	0.120
Northwest China	361	258	71.5	1.195	0.884–1.616	0.245	1.235	0.912–1.671	0.172
Central China	336	250	74.4	1.387	1.013–1.899	0.041	1.518	1.102–2.092	0.011
East China	765	576	75.3	1.455	1.126–1.879	0.004	1.528	1.179–1.979	0.001
Northeast China	221	176	79.6	1.867	1.274–2.735	0.001	1.904	1.298–2.792	0.001
Years of experience (practice as urologist)						0.657
< 1 year	109	79	72.5	1
1–3 years	215	153	71.2	0.937	0.561–1.566	0.804
4–5 years	267	187	70.0	0.888	0.541–1.457	0.637
6–10 years	705	523	74.2	1.091	0.694–1.716	0.706
> 10 years	2049	1467	71.6	0.957	0.622–1.473	0.842
Surgical experience of PCNL per year						0.017			0.016
< 10 cases	553	415	75.0	1
10–50 cases	1367	1001	73.2	0.909	0.725–1.141	0.412	0.882	0.701–1.109	0.283
51–100 cases	763	546	71.6	0.837	0.652–1.073	0.160	0.800	0.619–1.032	0.086
> 100 cases	662	447	67.5	0.691	0.537–0.890	0.004	0.674	0.519–0.875	0.003

ISSN: 1471-2490