Table 3.

Predicted cancer detection for variable quintiles 2018/2019 for both linear and multiple linear regression, and percentage point difference in predicted cancer detection from Q1 to Q5

Practice variable quintiles2018/2019 practice variable quintile, meanLinear regressionMultiple linear regression
Predicted cancer detection, % (95% CI)Q1–Q5 percentage point differencePredicted cancer detection, % (95% CI)Q1–Q5 percentage point difference
Practice list size (mean 8717)
1320750 (49 to 50)51 (50 to 51)
2542352 (51 to 52)52 (52 to 53)
3768653 (53 to 54)53 (52 to 54)
410 42753 (53 to 54)53 (42 to 43)
516 84754 (53 to 54)53 (42 to 43)
P<0.001+4P<0.001+2
List per FTE GP (mean 2304)
1129753 (53 to 54)53 (52 to 54)
2156654 (53 to 55)53 (53 to 54)
3193452 (52 to 53)52 (52 to 53)
4240351 (50 to 52)51 (51 to 52)
5446851 (51 to 52)52 (52 to 53)
P<0.001−2P = 0.002−1
GP average age, years (mean 47)
138.953 (52 to 54)53 (52 to 54)
242.954 (53 to 54)53 (52 to 54)
346.253 (52 to 54)53 (52 to 53)
450.352 (51 to 53)52 (51 to 53)
554.250 (49 to 51)51 (51 to 52)
P<0.001−3P = 0.002−2
QOF score, mean (mean 540.1)
1495.551 (50 to 51)52 (51 to 53)
2540.452 (51 to 53)53 (52 to 53)
3550.252 (52 to 53)52 (51 to 53)
4554.153 (53 to 54)53 (52 to 53)
5558.453 (53 to 54)53 (53 to 53)
P<0.001+2P= 0.113+1
IMD score 2019 (mean 25.6)
16.954 (54 to 55)54 (53 to 54)
214.154 (53 to 55)54 (53 to 54)
321.853 (52 to 53)53 (52 to 53)
432.151 (51 to 52)52 (51 to 52)
553.249 (49 to 50)50 (50 to 51)
P<0.001−5P<0.001−4
Patients aged >65 years (mean 17%)
18%50 (50 to 51)51 (50 to 52)
213%51 (51 to 52)52 (51 to 53)
317%52 (52 to 53)52 (52 to 53)
420%53 (52 to 53)52 (52 to 53)
526%55 (54 to 56)54 (54 to 55)
P<0.001+5P<0.001+3
Ethnicity, white (mean 83%)
149%51 (50 to 51)53 (52 to 54)
280%52 (51 to 53)53 (52 to 53)
392%52 (52 to 53)52 (52 to 53)
497%53 (52 to 54)52 (51 to 53)
598%54 (53 to 54)52 (51 to 53)
P<0.001+3P= 0.092−1
  • CI = confidence interval. FTE = full-time equivalent. IMD = Index of Multiple Deprivation. QOF = Quality and Outcomes Framework.