Table 1 Types of patient safety publications.
| Type of article | No of articles per 100 000 MEDLINE publications | Percentage change (95% CI)† | p value† | |
|---|---|---|---|---|
| Before IOM report | After IOM report | |||
| Original research | 23.7 | 40.8 | +72% (+55% to +91%) | <0.001 |
| Editorials | 8.6 | 39.1 | +454% (+388% to +530%) | <0.001 |
| Letters to the editor | 9.1 | 23.9 | +264% (+225% to +309%) | <0.001 |
| Reviews | 12.3 | 38.4 | +313% (+274% to +358%) | <0.001 |
| Guidelines | 0.4 | 2.3 | +516% (+264% to +1007%) | <0.001 |
| News items | 3.9 | 17.5 | +450% (+357% to +566%) | <0.001 |
| Other items | 0.7 | 2.2 | +301% (+72% to +524%) | <0.001 |
†p values and 95% confidence intervals were calculated from a Poisson comparison of publication rates before and after publication of the IOM report.