Distribution of identified softball injury studies by type of study and year of publication
| Year of publication | Reviews | Laboratory studies | Case reports/ case series | Descriptive epidemiologic studies | Analytic epidemiologic studies | Intervention and prevention studies | Total |
|---|---|---|---|---|---|---|---|
| 1970–79 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| 1980–89 | 3 | 2 | 5 | 7 | 0 | 1 | 18 |
| 1990–99 | 1 | 1 | 7 | 2 | 0 | 2 | 13 |
| 2000–03 | 1 | 2 | 1 | 2 | 1 | 0 | 7 |
| Total | 5 | 6 | 13 | 11 | 1 | 3 | 39 |
| Reference list numbers | 7, 9, 29–31 | 32–34, 36–38 | 39–51 | 6, 8, 10, 22–24, 52–56 | 25 | 26–28 |