Figure 2.

Frequencies of different types of description of results in Results section of Abstracts (n=120 treatment comparisons). Categories (described fully in table 1): 1. no difference; 2. no statistically significant difference; 3. no substantial or clinically important difference; 4. no improvement or no treatment benefit; 5. no significant improvement; 6. no substantial improvement; 7. lack of evidence for a difference; 8. treatments were similar; 9. statement of results; 10. clinical recommendation.