Table 2 Statistical Software Mentioned in HSR Articles, 2007-2009, by Authorship
| Â | Number | Percent | Number | Percent | Number | Percent |
|---|---|---|---|---|---|---|
| Â | U.S. Authorship | Non-U.S. Authorship | Total | |||
Total included articles | 791 | 100.0 | 86 | 100.0 | 877 | 100.0 |
Included articles mentioning software (% of articles) | 481 | 60.8 | 54 | 62.8 | 535 | 100.0 |
Included articles mentioning software (% distribution) | 481 | 89.9 | 54 | 10.1 | 535 | 100.0 |
Total number of software mentions (% distribution) | 574 | 90.1 | 63 | 9.9 | 637 | 100.0 |
Average number of software mentions per article | 1.2 | -- | 1.2 | -- | 1.2 | -- |
Articles in which Stata was used (% of articles)* | 238 | 49.5 | 8 | 14.8 | 246 | 46.0 |
Articles in which SAS was used (% of articles)* | 202 | 42.0 | 26 | 48.1 | 228 | 42.6 |
Articles in which SUDAAN was used (% of articles)* | 33 | 6.9 | 0 | 0.0 | 33 | 6.2 |
Articles in which SPSS was used (% of articles)* | 17 | 3.5 | 14 | 25.9 | 31 | 5.8 |
Articles in which other software was used (% of articles)* | 84 | 17.5 | 15 | 27.8 | 99 | 18.5 |