The double-port group showed a significantly higher score on the Visual Analogue Scale than the single-port group ( 4.8 + / - 1.4 vs 3.6 + / - 1.1 , t = -4.986 , P < 0.01 ) , but there were no significant differences between the two groups in the operation time ( [ 29.8 + / - 4.2 ] vs [ 31.2 + / - 4.6 ] min , t = 1.383 , P = 0.171 ) , postoperative hospital stay ( [ 1.95 + / - 0.7 ] vs [ 1.82 + / - 0.8 ] d , t = -0.784 , P = 0.436 ) , complications ( 0 vs 0 ) and scores on the satisfaction with abdominal cosmetic outcomes ( 4.6 + / - 0.6 vs 4.8 + / - 0.5 , t = 1.253 , P = 0.214 ) .