Indicator | Number of practices included | Median/IQR cases/events per practice | Median/IQR practice indicators | Median (IQR) Spearman-Brown reliability | Years required for reliability 0.7 | Years required for reliability 0.9 | |||
50% of practices | 90% of practices | 50% of practices | 90% of practices | ||||||
Diagnostic process indicators | |||||||||
Breast screening coverage | 7951 | 502 (258–862) | 71.3 (63.9–76.3) | % | 0.96 (0.93–0.97) | 0.1 | 0.3 | 0.4 | 1.0 |
Cervical screening coverage | 7910 | 1122 (644–1744) | 74.9 (70.3–78.5) | % | 0.97 (0.95–0.98) | 0.1 | 0.2 | 0.3 | 0.8 |
Bowel screening coverage | 7924 | 349 (166–632) | 57.0 (48.6–62.7) | % | 0.96 (0.93–0.97) | 0.1 | 0.3 | 0.4 | 1.2 |
Sigmoidoscopy rate | 7954 | 24.5 (13–44) | 4.1 (2.8–5.6) | Per 1000 person-years | 0.86 (0.76–0.91) | 0.4 | 1.2 | 1.5 | 4.8 |
Colonoscopy rate | 7954 | 39 (20–65) | 6.4 (4.7–8.4) | Per 1000 person-years | 0.87 (0.79–0.92) | 0.3 | 1.1 | 1.3 | 4.1 |
Upper gastrointestinal endoscopy rate | 7954 | 66 (35–110) | 10.8 (8.3–13.8) | Per 1000 person-years | 0.91 (0.84–0.94) | 0.2 | 0.7 | 0.9 | 2.7 |
TWW referral rate | 7954 | 124 (60–219) | 20.0 (14.2–26.4) | Per 1000 person-years | 0.97 (0.93–0.98) | 0.1 | 0.3 | 0.3 | 1.2 |
TWW referral rate (colorectal) | 7954 | 21 (9–38) | 3.4 (2.0–4.8) | Per 1000 person-years | 0.88 (0.77–0.93) | 0.3 | 1.4 | 1.3 | 5.6 |
TWW referral rate (lung) | 7954 | 5 (2–9) | 0.8 (0.4–1.2) | Per 1000 person-years | 0.60 (0.45–0.72) | 1.6 | 4.8 | 6.1 | 18.3 |
TWW referral rate (skin) | 7954 | 20 (8–37) | 3.2 (1.8–4.8) | Per 1000 person-years | 0.90 (0.80–0.94) | 0.3 | 1.2 | 1.0 | 4.7 |
TWW referral rate (breast) | 7954 | 22 (11–39) | 3.7 (2.5–4.9) | Per 1000 person-years | 0.81 (0.68–0.88) | 0.6 | 2.0 | 2.2 | 7.7 |
Diagnostic outcome indicators | |||||||||
TWW conversion rate | 7954 | 12 (6–22) | 9.9 (7.2–13.0) | % | 0.54 (0.37–0.67) | 2.0 | 7.6 | 7.6 | 29.2 |
TWW detection rate36 | 7941 | 12 (6–22) | 47.1 (38.2–55.6) | % | 0.32 (0.19–0.45) | 5.0 | 16.8 | 19.3 | 64.6 |
Emergency route to diagnosis | 7687 | 6 (3–11) | 23.4 (17.2–30.8) | % | 0.24 (0.14–0.33) | 7.6 | 24.6 | 29.1 | 94.7 |
Referred route to diagnosis | 7687 | 13 (6–22) | 49.2 (40.0–56.3) | % | 0.22 (0.13–0.32) | 8.2 | 28.1 | 31.5 | 108.5 |
Other route to diagnosis | 7687 | 7 (3–12) | 26.1 (19.1–33.9) | % | 0.33 (0.21–0.45) | 4.8 | 15.6 | 18.6 | 60.2 |
Other indicators | |||||||||
Cancer mortality | 7954 | 13 (7–23) | 2.3 (1.5–2.9) | Per 1000 person-years | 0.70 (0.55–0.80) | 1.0 | 3.3 | 3.9 | 12.5 |
Emergency cancer hospitalisations | 7935 | 28 (15–48) | 4.7 (3.4–6.0) | Per 1000 person-years | 0.81 (0.70–0.88) | 0.5 | 1.7 | 2.1 | 6.6 |
Incident cases | 7946 | 28 (15–48) | 4.8 (3.4–6.0) | Per 1000 person-years | 0.80 (0.68–0.87) | 0.6 | 1.9 | 2.2 | 7.2 |
Prevalent cases | 7960 | 112 (55–192) | 1.9 (1.4–2.4) | % | 0.96 (0.92–0.97) | 0.1 | 0.4 | 0.4 | 1.4 |
TWW, two-week wait.