“…Ratings for included observational studies were generally split. In total, 11 studies (58%) were rated good, 4,5,8,10,11,30,32,36,37,39,41 and 8 were rated poorly, 7,9,31,33–35,38,40 of the 19 studies that contributed to the CLABSI analyses. Twelve of 23 (52%) DVT studies were rated “good” or of “low” concerns of bias 5,6,8,11,32,37,42,43,47,49–51 while the rest were rated “poor” or of “unclear” concerns of bias.…”