Table 2Antibiotic treatment studies: number of QI strategies utilized

Number of QI strategies Randomized Controlled Trial Quasi-RCT Controlled Before-After Study Total
One 15 [ 24, 7, 8, 10, 19, 21, 22, 25, 26, 28, 31, 32, 41 ] 3 [ 6, 14, 15 ] 1 [ 36 ] 19
Two 6 [ 20, 23, 24, 29, 33, 38 ] 1 [ 13 ] 9 [ 5, 11, 16, 17, 27, 30, 34, 37, 39 ] 16
Three 2 [ 1, 40 ] 1 [ 35 ] 2 [ 11, 18 ] 5
Four 0 0 0 0
Five 0 0 0 0
Six 1 [ 9 ] 0 0 1
More than six 0 0 0 0
Total 24 5 12

“Quasi-RCT” refers to studies described as randomized where randomization was altered by investigators, or where a method of patient assignment was used that is not truly random (e.g. assignment by even/odd medical record number or date of clinic visit.) “Controlled Before-After Study” refers to non-randomized controlled trials with a contemporaneous comparison group. Quasi-RCT's and Controlled Before-After studies were grouped together in statistical analyses.

From: 3, Results

Cover of Closing the Quality Gap: A Critical Analysis of Quality Improvement Strategies (Vol. 4: Antibiotic Prescribing Behavior)
Closing the Quality Gap: A Critical Analysis of Quality Improvement Strategies (Vol. 4: Antibiotic Prescribing Behavior).
Technical Reviews, No. 9.4.
Ranji SR, Steinman MA, Shojania KG, et al.

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