Study design | Number of articles | References | Number of articles in each study design category intending to test utility of SPC | References |
---|---|---|---|---|
*The study designs are reported in order of frequency. | ||||
Case study | 28 | 16, 17, 19–21, 24, 26, 29, 33, 34, 36, 39, 41, 44–49, 53, 55, 57, 58, 61, 63–65, 67 | 16 | 16, 17, 20, 24, 26, 36, 41, 44, 47, 48, 57, 61, 63–65, 67 |
Tutorial with illustrative case study | 23 | 15, 18, 22, 23, 25, 27, 30, 31, 35, 37, 38, 40, 42, 50–52, 54, 59, 62, 66, 69–71 | 3 | 22, 25, 30 |
Observational study of change in clinical procedure(s) using historical controls | 2 | 43, 68 | 0 | |
Controlled before-and-after intervention studies | 2 | 28, 56 | 1 | 56 |
Patient case reports | 2 | 32, 60 | 2 | 32, 60 |