Effect of Standing Order Protocol and Electronic Outreach on 30-Day Fecal immunochemical Test (FIT) Completion Rate excluding Patients Who Were Mailed Fecal immunochemical Test (FIT), Subgroup Analysis by Preferred Language
| Age Group (Years) | Intervention Componentsa | Preferred Languageb | Estimate Type | Pre-Intervention | Post-Intervention | Pre/Post-Intervention Difference | Pre/Post Intervention Difference Accounting for Comparison Groupc |
|---|---|---|---|---|---|---|---|
| 45–49 | Electronic Outreach + Standing Order Protocol | Cantonese | Intercept | 4.9 (3.2, 6.6) | 6.4 (4.6, 8.3) | 1.5 (−1.0, 4.1) | −1.1 (−4.7, 2.5) |
| Slope | 0.4 (0.1, 0.6) | 0.0 (−0.6, 0.5) | −0.4 (−1.0, 0.1) | −0.8 (−1.6, 0.0) | |||
| English | Intercept | 1.1 (0.4, 1.7) | 3.0 (2.3, 3.8) | 2.0 (1.0, 2.9) | 1.7 (0.3, 3.1) | ||
| Slope | 0.0 (0.0, 0.1) | −0.1 (−0.3, 0.1) | −0.1 (−0.3, 0.1) | −0.3 (−0.6, 0.1) | |||
| Spanish | Intercept | 1.5 (0.1, 2.9) | 6.6 (5.1, 8.1) | 5.1 (3.0, 7.1) | 3.8 (0.9, 6.7) | ||
| Slope | 0.0 (−0.2, 0.2) | 0.0 (−0.5, 0.4) | −0.1 (−0.5, 0.4) | −0.1 (−0.8, 0.5) | |||
| Cantonese | Intercept | 11.9 (9.5, 14.4) | 5.7 (3.0, 8.4) | −6.2 (−9.9, −2.6) | −8.9 (−14.0, −3.7) | ||
| Slope | 1.0 (0.7, 1.4) | 0.2 (−0.5, 1.0) | −0.8 (−1.6, 0.0) | −1.2 (−2.4, −0.1) | |||
| English | Intercept | 1.1 (0.3, 1.8) | 2.6 (1.8, 3.4) | 1.5 (0.4, 2.6) | 1.2 (−0.3, 2.8) | ||
| Slope | 0.1 (0.0, 0.2) | 0.1 (−0.1, 0.3) | 0.0 (−0.2, 0.3) | −0.1 (−0.5, 0.2) | |||
| Spanish | Intercept | 2.6 (0.8, 4.3) | 7.5 (5.5, 9.4) | 4.9 (2.3, 7.5) | 3.6 (−0.1, 7.3) | ||
| Slope | 0.1 (−0.2, 0.3) | −0.3 (−0.8, 0.3) | −0.3 (−0.9, 0.3) | −0.4 (−1.2, 0.4) | |||
| 51–55 | Standing Order Protocol | Cantonese | Intercept | 4.2 (1.8, 6.7) | 6.9 (4.2, 9.6) | 2.7 (−1.0, 6.3) | NA |
| Slope | −0.3 (−0.7, 0.0) | 0.1 (−0.7, 0.8) | 0.4 (−0.4, 1.2) | NA | |||
| English | Intercept | 2.2 (1.4, 2.9) | 2.4 (1.6, 3.2) | 0.2 (−0.9, 1.3) | NA | ||
| Slope | 0.0 (−0.1, 0.1) | 0.1 (−0.1, 0.3) | 0.1 (−0.1, 0.4) | NA | |||
| Spanish | Intercept | 5.0 (3.2, 6.8) | 6.3 (4.4, 8.3) | 1.3 (−1.3, 4.0) | NA | ||
| Slope | 0.0 (−0.2, 0.3) | 0.1 (−0.4, 0.6) | 0.1 (−0.5, 0.7) | NA |
Estimated using segmented linear regression with ordinary least squares estimation.
aStanding order protocol + electronic outreach excludes patients who were mailed FIT. Standing order protocol only excludes patients who were mailed FIT or received electronic outreach.
bVariable levels with small numbers of observations were excluded.
cTo account for the possibility that the pre/post-intervention difference in the 45–49 age group might be affected by events other than the intervention rollout, we calculated estimates of the effect of the intervention by subtracting the pre/post-intervention difference observed in 51–55 age group from the pre/post-intervention difference observed in the 45–49 age group.