Author, title and type of study | Population and type of surgery | Trial setting and co-interventions | Outcome measures, no. of wound infections | Comments, opinions and limitations |
Study 1 [26] (Primary research) | 660 patients undergoing clean surgery | Operating room. Mask versus No mask | Wound infection. No. not specified. | Scrubbed staff not included in the trial. |
Study 2 [17] (Systematic review) | 1429 undergoing elective surgery | Operating room. Mask versus No mask | Wound infection. No. not specified. | Unit of analysis error present |
Study 3 [3] (Systematic review) | 2113 patients undergoing clean surgery | Operating room. Mask versus No mask | Wound infection. No. not specified. | Unit of analysis error present |