“…In subgroup analysis of APR with primary perineal closure for nonlocally advanced disease, the association of OP with 30-day wound complications remained nonsignificant (RR 1.28; 95% CI 0.64-2.56; I 2 ¼ 73%). 2,4,24 There was no reduced risk of pelviperineal morbidity within 1 year (RR 1.18; 95% CI 0.80-1.74; I 2 ¼ 80%) 2,4,22,24,28 or within the total study period (RR 1.09; 95% CI 0.83-1.44; I 2 ¼ 69%) 2,4,9,10,[22][23][24]28,30 for patients submitted to OP.…”