Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 1 Level of evidence and study type by year of publication
From: Hip surgery and its evidence base: progress over a decade?
Year | P value | ||
|---|---|---|---|
2000 | 2010 | ||
Type of study | |||
Diagnostic | 25 (14 %) | 13 (4 %) | <0.001 |
Economic | 3 (1 %) | 4 (1 %) | 0.697 |
Prognostic | 11 (6 %) | 20 (6 %) | 0.999 |
Therapeutic | 144 (79 %) | 311 (89 %) | 0.001 |
Level of evidence | |||
Level 1 | 10 (5 %) | 38 (11 %) | 0.039 |
Level 2 | 12 (7 %) | 69 (20 %) | <0.001 |
Level 3 | 19 (10 %) | 35 (10 %) | 0.881 |
Level 4 | 115 (63 %) | 143 (41 %) | <0.001 |
Level 5 | 27 (15 %) | 63 (18 %) | 0.394 |
Total | N = 183 | N = 348 | |