. 2016 Aug 10;2(3):e70–e77. doi: 10.1055/s-0036-1587691

Table 2. Comparison of the study design and methodology for those studies included in a meta-analysis of bacterial decolonization.

	Sellers and Newman ³⁰	May et al ²⁵	Guzel et al ²⁴
Tissue type	Human umbilicus in abdominal surgery	Harvested human skin grafts	Neurosurgical operating site (cranial and spinal)
Sample	n = 105; patients were treated as separate samples	n = 342; grafts were taken from multiple sites, yielding 3,263 samples	n = 100; patients were treated as separate samples; 50 cranial and 50 spinal patients
Control arm	n = 70	n = 294 (2,940 samples)	N/A
Combination arm	n = 35	n = 48 (323 samples)	N/A
Application method (including timing if specified)	PVI-soaked sponge for 1 h, CHG with alcohol	CHG; alcohol; PVI	CHG 3 min; PVI 30 s; PVI 30 s
Control antisepsis	CHG with alcohol	PVI with alcohol; PVI	Samples for culture counts were taken in between cleanings; therefore counts after CHG only are compared with CHG and PVI

Abbreviations: CHG, chlorhexidine; DM, diabetes mellitus; N/A, not applicable; PVI, povidone-iodine.