However , there was no real evidence supporting the second hypothesis that the relative risk of wound infection would substantially vary over different levels of surgery cleanliness .
: As well as antibiotic prophylaxis being a generally effective intervention for preventing postoperative wound infection , the level of this effectiveness would appear to be reasonably independent of what type of surgery is being considered .
In particular , perhaps a sensible philosophy would be to assume that antibiotic prophylaxis is effective in reducing the risk of wound infection for all types of surgery , even ones where no clinical trial data exists and make exceptions to this rule if , for certain types of surgery , it can be proved to the contrary
CONTEXT While the main focus of a meta- analysis is often to assess the effectiveness of a particular intervention in managing or curing a specific condition , there exists a substantial amount of information within published systematic review s that could be used to assess the validity of a generic hypothesis about the effectiveness of an intervention across a range of different but related conditions .
OBJECTIVE To systematic ally search for and then collate the results of meta-analyses for the effectiveness of antibiotic prophylaxis in preventing postoperative wound infection across various types of surgery in order to assess generic hypotheses about the effectiveness of this intervention in surgery as a whole .
With the relative risk of wound infection used as the measure of clinical effectiveness , the hypotheses to be assessed were first that antibiotic prophylaxis would be an effective intervention for preventing wound infection over a broad range of different surgical procedures , and second that there would be a substantial difference in the effectiveness of antibiotic prophylaxis between " clean " and " contaminated " surgical procedures .
Randomization Tests
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However , there was no real evidence supporting the second hypothesis that the relative risk of wound infection would substantially vary over different levels of surgery cleanliness .
: As well as antibiotic prophylaxis being a generally effective intervention for preventing postoperative wound infection , the level of this effectiveness would appear to be reasonably independent of what type of surgery is being considered .
In particular , perhaps a sensible philosophy would be to assume that antibiotic prophylaxis is effective in reducing the risk of wound infection for all types of surgery , even ones where no clinical trial data exists and make exceptions to this rule if , for certain types of surgery , it can be proved to the contrary
CONTEXT While the main focus of a meta- analysis is often to assess the effectiveness of a particular intervention in managing or curing a specific condition , there exists a substantial amount of information within published systematic review s that could be used to assess the validity of a generic hypothesis about the effectiveness of an intervention across a range of different but related conditions .
OBJECTIVE To systematic ally search for and then collate the results of meta-analyses for the effectiveness of antibiotic prophylaxis in preventing postoperative wound infection across various types of surgery in order to assess generic hypotheses about the effectiveness of this intervention in surgery as a whole .
With the relative risk of wound infection used as the measure of clinical effectiveness , the hypotheses to be assessed were first that antibiotic prophylaxis would be an effective intervention for preventing wound infection over a broad range of different surgical procedures , and second that there would be a substantial difference in the effectiveness of antibiotic prophylaxis between " clean " and " contaminated " surgical procedures .