Table 4.
Cascade effects of testing in 6-month period after testing
| Mean number of GP appointments per persona (95% CI) | Mean number of phlebotomy appointments in 6 months (95% CI) | Mean number of total tests requested (95% CI) | Mean number of referrals per person (95% CI) | |
|---|---|---|---|---|
| True-positives, n= 5712 | 15.0b (14.7 to 15.3) | 4.26b (4.15 to 4.37) | 43.7b (42.3 to 45.2) | 0.86b (0.83 to 0.89) |
| False-negatives, n= 5912 | 12.0b (11.7 to 12.2) | 3.23b (3.14 to 3.32) | 30.0b (28.8 to 31.2) | 0.78b (0.75 to 0.81) |
| False-positives, n= 32 298 | 10.3b (10.2 to 10.4) | 2.78b (2.75 to 2.82) | 24.3b (23.9 to 24.7) | 0.62b (0.61 to 0.64) |
| True-negatives, n= 93 039 | 7.29b (7.2 to 7.3) | 1.81b (1.80 to 1.83) | 13.7b (13.5 to 13.8) | 0.52b (0.51 to 0.52) |
| Untested controls n= 37 539 | 4.80 (4.74 to 4.86) | 1.14 (1.12 to 1.16) | 9.66 (9.47 to 9.85) | 0.24 (0.24 to 0.25) |
True-positives = people with a positive test who develop relevant disease. False-negatives = people with a negative test who develop relevant disease. False-positives = people with a positive test with no relevant disease. True-negatives = people with a negative test with no relevant disease.
a
Includes face-to-face consultations, home visits, and telephone consultations.
b
P<0.001 — comparing true-positives to false-negatives and comparing false-positives to true-negatives.