Table 2 Policy effect on level and trend change in number of unique patients seen and rheumatology services provided per month, as evaluated by interrupted time series
Change in level (β2) | Change in trend (β3) | ||||||
|---|---|---|---|---|---|---|---|
Outcome | Definition | Mean | 95% CI | p | Mean | 95% CI | p |
Unique patients per month | Primary analysis: | ||||||
1 or more per month (“Consistent”) | 4.9% | (0.0%, 9.9%) | 0.049 | 0.2% | (-0.3%, 0.7%) | 0.507 | |
Sensitivity analysis: | |||||||
Billed at least once (“Ever-billed”) | 12.9% | (5.3%, 21.0%) | 0.001 | 0.5% | (-0.0%, 1%) | 0.052 | |
≥ 25 per month (“High intensity”) | 8.4% | (2.7%, 14.5%) | < 0.001 | 0.05% | (-0.4%, 0.7%) | 0.845 | |
Services billed per month | Primary analysis: | ||||||
1 or more per month (“Consistent”) | 7.1% | (1.0%, 13.6%) | 0.021 | 0.1% | (-0.5%, 0.7%) | 0.750 | |
Sensitivity analysis: | |||||||
Billed at least once (“Ever-billed”) | 16.8% | (7.9%, 26.4%) | < 0.001 | 0.3% | (-0.2%, 0.9%) | 0.239 | |
≥ 25 per month (“High intensity”) | 8.1% | (0.2%, 15.9%) | 0.044 | -0.2% | (-0.8%, 0.5%) | 0.485 | |