Table 1 Mention of Statistical Software in HSR Articles, 2007-2009, by Year
| Â | 2007 | 2008 | 2009 | 2007-2009 |
|---|---|---|---|---|
Total articles | 393 | 374 | 372 | 1139 |
Excluded articles | 111 | 66 | 85 | 262 |
Included articles | 282 | 308 | 287 | 877 |
   Included articles not mentioning software | 110 | 120 | 112 | 342 |
   Included articles mentioning software | 172 | 188 | 175 | 535 |
   % of all included articles that mentioned software | 61.0 | 61.0 | 61.0 | 61.0 |
Number of software mentions | 212 | 224 | 201 | 637 |
Average number of software mentions per included article | 1.2 | 1.2 | 1.1 | 1.2 |
% of articles in which Stata was used* | 48.3 | 42.6 | 47.4 | 46.0 |
% of articles in which SAS was used* | 37.2 | 43.1 | 47.4 | 42.6 |
% of articles in which SUDAAN was used* | 10.5 | 5.3 | 2.9 | 6.2 |
% of articles in which SPSS was used* | 4.7 | 8.5 | 4.0 | 5.8 |
% of articles in which other statistical software was used* | 22.7 | 19.7 | 13.7 | 18.5 |