Fig. 4

Heat map for the distribution of keywords among patients with and without deep SSI

* Proximity search, keyword must be within a distance of five words from one of the following locations: incision, operation wound, abdomen, wound, pelvis, duodenum, flank, gall bladder, skin, intra-abdominal, next to anastomosis, colon, liver, pancreas, abdomen/stomach, between small intestines, operation area, operation wound, presacral, rectum, retroperitoneal, incision, intestine, small intestine, under diaphragm, midline incision, midline wound, sutures / stitches / (surgical) staples, stomach.

# The following antibiotics including their brand names: piperacillin-tazobactam, meropenem, imipenem, metronidazole, ciprofloxacin, cefotaxime, trimethoprim-sulfa, cefuroxime, amoxicillin.