Table 3. Pairwise Comparisons of Quantities Dispensed at Each Default Settinga.
| Default Quantity | Default Quantity, Difference (95% CI) | |||||
|---|---|---|---|---|---|---|
| 10 | 12 | 15 | 20 | Null | ||
| 5 | 1.8 (0.8 to 2.7)b | 0.4 (−0.4 to 1.2) | 1.8 (0.8 to 2.9)b | 2.9 (2.1 to 3.8)b | 1.0 (−2.1 to 0.1) | |
| 10 | NA | −1.4 (−2.3 to −0.4)c | 0.1 (−1.1 to 1.2) | 1.2 (0.2 to 2.2)c | −0.8 (−2.0 to 0.4) | |
| 12 | NA | NA | 1.4 (0.4 to 2.5)c | 2.5 (1.7 to 3.4)b,d | 0.6 (−0.5 to 1.7) | |
| 15 | NA | NA | NA | 1.1 (0.0 to 2.2)d | −0.9 (−2.2 to −0.4) | |
| 20 | NA | NA | NA | NA | −2.0 (−3.1 to −0.8)b | |
Abbreviation: NA, not applicable.
a
Values represent the difference in mean number of opioid tablets prescribed between the column and row default assignment.
b
P < .001.
c
P < .01.
d
Default quantity 20 was only conducted at site 1, and default quantity 12 was only conducted at site 2.