Table 1.

Descriptive characteristics of final studies used for systematic review.

Author	Study year	Total pop. N	Followup	>500 N	350–499 N
García et al. [9]	2004	861	8 months	90	137
Van Griensven and Thai [10]	2011	2840	6 months	N/A	N/A
Van Lelyveld et al. [11]	2012	3068	24 months	811	1413
Kaplan et al. [12]	2003	2729	21 months	499	483
Kawado et al. [13]	2006	605	60 months	114	134
Lifson et al. [14]	2012	1590	104.4 months	279	433
Cain et al. [15]	2011	20971	N/A	N/A	N/A

N/A stands for not available.