Estimated Performance Level in the Fully Adjusted Model for the Corresponding Panel Size
| Indicator | Panel size P value | Panel Size | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1,200 | 1,500 | 1,800 | 2,100 | 2,400 | 2,700 | 3,000 | 3,300 | 3,600 | 3,900 | ||
| Cancer screening, % (95% CI) | |||||||||||
| Breast | <.001 | 64.6 (63.9–65.3) | 64.2 (63.8–64.6) | 63.8 (63.4–64.1) | 63.4 (63.0–63.8) | 63.1 (62.6–63.6) | 62.7 (62.2–63.3) | 62.4 (61.8–63.0) | 62.1 (61.4–62.9) | 61.9 (60.8–62.9) | 61.6 (60.3–62.9) |
| Cervical | <.001 | 63.7 (62.9–64.5) | 62.8 (62.3–63.2) | 61.9 (61.5–62.3) | 61.1 (60.5–61.6) | 60.4 (59.8–61.0) | 59.9 (59.3–60.6) | 59.5 (58.7–60.3) | 59.2 (58.1–60.3) | 58.9 (57.4–60.5) | 58.7 (56.6–60.7) |
| Colorectal | .01 | 45.6 (44.3–46.8) | 44.6 (43.9–45.4) | 43.8 (43.2–44.4) | 43.2 (42.5–43.9) | 42.9 (42.1–43.8) | 43.0 (42.1–43.9) | 43.2 (42.1–44.2) | 43.5 (42.1–44.9) | 44.0 (42.1–45.9) | 44.4 (42.0–46.9) |
| Chronic disease management, % (95% CI) | |||||||||||
| Diabetes | |||||||||||
| Eye examination | .75 | 71.6 (71.1–72.2) | 71.8 (71.4–72.1) | 71.8 (71.6–72.1) | 71.9 (71.6–72.2) | 71.9 (71.6–72.3) | 72.0 (71.6–72.3) | 71.9 (71.5–72.4) | 71.9 (71.4–72.4) | 71.8 (71.2–72.5) | 71.8 (70.9–72.7) |
| Lipid test | .59 | 62.8 (61.4–64.1) | 63.0 (62.2–63.8) | 63.1 (62.5–63.8) | 63.3 (62.5–64.1) | 63.5 (62.6–64.3) | 63.6 (62.7–64.5) | 63.7 (62.6–64.8) | 63.8 (62.4–65.3) | 64.0 (61.9–65.9) | 64.1 (61.4–66.6) |
| HbA1c test | .11 | 39.7 (38.2–41.2) | 39.3 (38.5–40.2) | 39.0 (38.3–39.7) | 38.6 (37.8–39.5) | 38.3 (37.3–39.3) | 37.9 (36.9–39.0) | 37.6 (36.3–38.9) | 37.2 (35.5–38.9) | 36.9 (34.6–39.2) | 36.5 (33.6–39.5) |
| Metformin | .24 | 89.1 (87.0–90.9) | 88.5 (87.1–89.7) | 87.9 (86.8–88.8) | 87.4 (86.2–88.5) | 87.0 (85.6–88.3) | 86.8 (85.3–88.1) | 86.6 (85.1–88.1) | 86.6 (84.9–88.2) | 86.6 (84.5–88.5) | 86.6 (84.0–88.9) |
| ACEi/ARB | .19 | 73.3 (72.6–74.0) | 73.5 (73.1–73.9) | 73.7 (73.4–74.0) | 73.9 (73.5–74.3) | 74.0 (73.5–74.4) | 74.1 (73.6–74.6) | 74.2 (73.7–74.7) | 74.2 (73.6–74.9) | 74.3 (73.5–75.1) | 74.4 (73.3–75.4) |
| Lipid-lowering agent | .66 | 69.7 (68.8–70.5) | 69.8 (69.3–70.3) | 69.9 (69.5–70.3) | 70.0 (69.5–70.5) | 70.1 (69.5–70.6) | 70.1 (69.6–70.7) | 70.2 (69.5–70.8) | 70.2 (69.4–71.1) | 70.3 (69.1–71.4) | 70.3 (68.8–71.7) |
| Other | |||||||||||
| CHF: ECHO | <.001 | 69.4 (67.3–71.3) | 70.2 (69.0–71.4) | 71.1 (70.2–72.0) | 71.9 (70.8–72.9) | 72.6 (71.4–73.7) | 73.2 (72.0–74.4) | 73.8 (72.5–75.1) | 74.4 (72.8–75.9) | 74.9 (72.9–76.8) | 75.5 (72.9–77.8) |
| CHF: ACEi/ARB | .39 | 67.3 (65.1–69.3) | 67.9 (66.6–69.2) | 68.5 (67.5–69.4) | 68.9 (67.7–70.0) | 69.2 (67.9–70.4) | 69.3 (67.9–70.6) | 69.3 (67.8–70.7) | 69.3 (67.5–71.0) | 69.2 (66.9–71.4) | 69.2 (66.3–71.9) |
| Asthma: Spirometry | .33 | 24.9 (22.7–27.3) | 24.4 (23.0–25.9) | 24.0 (22.9–25.1) | 23.6 (22.4–24.9) | 23.3 (21.9–24.7) | 23.0 (21.5–24.6) | 22.8 (21.2–24.4) | 22.6 (20.8–24.4) | 22.4 (20.3–24.6) | 22.2 (19.6–25.1) |
| Access & Outcomes (RIO <10), % (95% CI) | |||||||||||
| Admissions for ACSC | .04 | 12.0 (11.4–12.7) | 12.2 (11.7–12.8) | 12.4 (12.0–12.9) | 12.6 (12.1–13.2) | 12.8 (12.2–13.4) | 12.9 (12.3–13.5) | 13.0 (12.4–13.7) | 13.1 (12.4–13.8) | 13.2 (12.4–14.0) | 13.3 (12.3–14.3) |
| ED visits, low triage | .004 | 19.5 (18.7–20.3) | 19.0 (18.5–19.4) | 18.5 (18.1–18.8) | 18.1 (17.7–18.5) | 17.8 (17.3–18.3) | 17.6 (17.1–18.2) | 17.5 (16.9–18.1) | 17.4 (16.8–18.1) | 17.4 (16.6–18.3) | 17.4 (16.3–18.5) |
| Physician, % (95% CI) | |||||||||||
| Continuity | <.001 | 78.0 (77.4–78.5) | 78.6 (78.2–78.9) | 79.1 (78.8–79.3) | 79.3 (79.0–79.7) | 79.3 (78.9–79.8) | 79.1 (78.7–79.6) | 78.7 (78.1–79.2) | 78.1 (77.4–78.8) | 77.4 (76.5–78.3) | 76.7 (75.6–77.9) |
| Comprehensiveness | .03 | 66.5 (65.8–67.2) | 66.6 (66.2–67.0) | 66.7 (66.3–67.0) | 66.7 (66.2–67.2) | 66.5 (66.0–67.1) | 66.3 (65.7–66.9) | 66.1 (65.4–66.7) | 65.7 (65.0–66.4) | 65.4 (64.5–66.3) | 65.1 (64.0–66.1) |
ACEi = angiotensin-converting enzyme inhibitor; ACSC = ambulatory-care–sensitive conditions; ARB = angiotensin receptor blocker; CHF = congestive heart failure; ECHO = echocardiogram; ED = emergency department; HbA1c = glycated hemoglobin; RIO = Rurality Index of Ontario.
Note: Quality of care indicator performance levels are derived from regression coefficients set at their mean or mode across for panel size intervals. The P values given in the table are omnibus P value that represent the overall effect of the 2 panel-size cubic spline variables produced by the equation.