Predicting lower limb periprosthetic joint infections: A review of risk factors and their classification

Table 1 Study characteristics including number of patients, statistical method used, site (hip, knee or both), and duration of patient follow-up

Ref.	Year	Patients (n)			Statistical method used	Site	Follow-up (mo)
		Infected (cases)	Non-infected (controls)	Total			Min	Max	Mean
Berbari et al[9]	1998	462	462	924	OR, CI, P	Both	-	-	-
Lai et al[10]	2007	51	-	-	OR, CI, P	Both	-	84	-
Parvizi et al[11]	2007	78	156	234	OR, CI, P	Both	-	-	-
Pulido et al[12]	2008	63	9182	9245	HR, CI, P	Both	12	72	43
Malinzak et al[13]	2009	43	8451	8494	OR, P	Both	24	192	74.4
Ong et al[14]	2009	887	39042	39929	OR, P	Hip	-	108	-
Berbari et al[5]	2010	339	339	678	OR, CI, P	Both	-	-	-
Peel et al[15]	2011	63	126	189	OR, CI, P	Both	-	-	-
Bozic et al[16]	2012	-	-	40919	HR, CI, P	Hip	12	-	-
Jämsen et al[17]	2012	52	7129	7181	HR, CI, P	Both	0	12	12
Bozic et al[4]	2012	-	-	83011	OR, CI, P	Knee	12	-	-
Dale et al[18]	2012	2778	429390	432168	RR, CI, P	Hip	0	60	60
Greenky et al[19]	2012	389	15333	15722	OR, CI, P	Both	36	108	62.4
Namba et al[20]	2013	404	55812	56216	HR, CI, P	Knee	-	-	-
Somayaji et al[21]	2013	5	254	259	OR, CI, P	Both	12	124	24
Coelho-Prabhu et al[22]	2013	339	339	678	OR, CI, P	Both	2	24	-
Maoz et al[23]	2014	47	3625	3672	OR, CI, P	Hip	12	48	24
Gómez-Lesmes et al[24]	2014	32	1299	1331	OR, CI, P	Knee	-	3	-
Yi et al[25]	2014	126	375	501	OR, CI, P	Both	3	-	-
Wu et al[26]	2014	45	252	297	OR, CI, P	Both	12	144	28
Sousa et al[27]	2014	43	2454	2497	OR, CI, P	Both	1	12	12
Jiang et al[28]	2014	-	-	306946	HR, P	Hip	6	-	-
	2014	-	-	573840	HR, P	Knee	6	-	-
Duchman et al[29]	2015	8062+	70129+	78191	OR, CI, P	Both	-	-	-
Chrastil et al[30]	2015	-	-	13272	HR, CI, P	Both	24	120	-
Crowe et al[31]	2015	26	3393	3419	OR, CI, P	Both	-	12	-
Debreuve-Theresette et al[32]	2015	45	90		OR, CI, P	Both	-	-	-
Bohl et al[33]	2015	-	-	49603	RR, CI, P	Both	-	1	-

RR: Relative risk; HR: Hazard ratio; OR: Odds ratio.