Table 2

Summary of included studies: study arms and patient characteristics

Study	Segment resected	Arm	No. of patients			Mean age	BMI	ASA score
Study	Segment resected	Arm	Total	Men	Women	Mean age	BMI	ASA score
Anjum et al. (16)	Small bowel 39, right 67, left 50, rectum 34	MBP + OA	95	61	34	46.3 ± 14.4	21.3 ± 3.7	I: 0 II: 80 III: 15
Anjum et al. (16)	Small bowel 39, right 67, left 50, rectum 34	MBP	95	59	36	45.2 ± 15.6	21.7 ± 4.8	I: 2 II:76 III:17
Basany et al. (27)	Right 268, left 240, total colectomy 25, segment 3, other 2	OA	283^†	142	125	70.0 ± 11.9	27.6 ± 4.1	I–II: 145 III–IV: 122
Basany et al. (27)	Right 268, left 240, total colectomy 25, segment 3, other 2	Control	282^‡	152	117	71.7 ± 13.3	27.6 ± 4.1	I–II:129 III–IV: 140
Taylor and Lindsay (25)	Right 93, left 168, Hartmann 6, APR 43, other 17^*	OA + MBP	189^§	79	80	66.7 ± 13.0	NR	NR
Taylor and Lindsay (25)	Right 93, left 168, Hartmann 6, APR 43, other 17^*	MBP	192^¶	79	89	66.5 ± 12.9	NR	NR

APR = abdominoperineal resection; ASA = American Society of Anesthesiologists; BMI = body mass index; MBP = mechanical bowel preparation; NR = not reported; OA = oral antibiotics.
↵* Not reported for 54 cases.
↵† Not reported for 16 cases.
↵‡ Not reported for 12 cases.
↵§ The sex of 30 patients was unknown.
↵¶ The sex of 24 patients was unknown.