Table 1.
Descriptive statistics of variables
| Variable | Year | |||||
|---|---|---|---|---|---|---|
| 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | |
| Normally distributed | Mean (SD); % missing | Mean (SD); % missing | Mean (SD); % missing | Mean (SD); % missing | Mean (SD); % missing | Mean (SD); % missing |
| Continuity,a % | 37.5 (13.4); 1.50 | 35.9 (13.6); 1.10 | 34.3 (13.5); 0.97 | 32.1 (13.4); 1.40 | 30.1 (13.1); 1.40 | 27.2 (13.1); 3.40 |
| Has preferred GP, % (GPPS Q8) | 56.2 (11.6); 0.11 | 55.8 (11.5); 0.02 | 55.0 (11.4); 0.00 | 52.1 (12.0); 0.00 | 49.7 (11.8); 0.00 | 46.9 (11.9); 1.70 |
| Able to see GP always, almost always, or a lot of the time, % (GPPS Q9) | 65.2 (15.6); 1.20 | 62.8 (16.2); 0.80 | 61.0 (16.8); 0.66 | 59.8 (16.7); 1.10 | 58.4 (16.9); 1.10 | 55.5 (17.8); 3.10 |
| Good overall appointment experience, % (GPPS Q18) | 88.5 (7.4); 0.11 | 87.1 (8.1); 0.02 | 86.1 (8.6); 0.00 | 85.3 (9.3); 0.00 | 85.6 (9.0); 0.00 | 85.3 (9.4); 1.70 |
| Practice list aged ≥75 years, % (PHE) | 7.6 (3.1); 0.00 | 7.7 (3.1); 0.00 | 7.8 (3.1); 0.00 | 7.8 (3.2); 0.00 | 7.8 (3.2); 0.01 | 7.9 (3.3); 1.90 |
| Self-reported long-term condition, % (GPPS Q31) | 53.1 (7.4); 0.11 | 53.5 (7.7); 0.02 | 53.9 (7.7); 0.0 | 54.0 (7.9); 0.0 | 53.3 (7.8); 0.00 | 53.7 (7.8); 1.70 |
| Skewed distribution | Median (IQR); % missing | Median (IQR); % missing | Median (IQR); % missing | Median (IQR); % missing | Median (IQR); % missing | Median (IQR); % missing |
| List size, n (QOF) | 7060 (4685 to 10 136); 0.08 | 7141 (4750 to 10 228); 0.08 | 7212 (4808 to 10 312); 0.21 | 7321 (4898 to 10 453); 0.10 | 7454 (5038 to 10 677); 0.0 | 7718 (5211 to 10 959); 1.90 |
| Black ethnicity, % (GPPS Q52) | 0.0 (0.0 to 2.8); 5.60 | 0.0 (0.0 to 2.7); 5.70 | 0.0 (0.0 to 2.7); 4.10 | 0.0 (0.0 to 2.9); 4.10 | 0.6 (0.0 to 3.1); 1.90 | 0.6 (0.0 to 3.4); 4.30 |
| South Asian ethnicity, % (GPPS Q52) | 1.0 (0.0 to 4.1); 4.90 | 0.9 (0.0 to 4.1); 4.90 | 0.9 (0.0 to 4.3); 3.40 | 0.9 (0.0 to 4.3); 3.60 | 1.1 (0.0 to 5.1); 2.30 | 1.2 (0.0 to 5.0); 4.10 |
| Permanently sick or disabled, % (GPPS Q53) | 4.2 (2.5 to 6.6); 1.00 | 4.0 (2.3 to 6.4); 0.62 | 3.9 (2.1 to 6.2); 0.70 | 3.7 (2.1 to 6.1); 0.88 | 3.7 (1.9 to 5.9); 0.30 | 3.6 (1.9 to 5.8); 2.20 |
| Self-reported smokers, % (GPPS Q59) | 18.2 (14.1 to 23.0); 0.14 | 17.2 (13.1 to 21.8); 0.11 | 16.6 (12.6 to 21.5); 0.08 | 15.8 (11.9 to 20.6); 0.24 | 16.0 (12.1 to 20.5); 0.03 | 15.1 (11.1 to 19.7); 1.70 |
a
Continuity was calculated by multiplying the scores of specified responses to two questions in the GPPS: Q8, ‘Have a preferred GP to see or speak to’ (‘Yes’ answer), and Q9, ‘Frequency of seeing preferred GP’ (higher level of access: the sum of ‘Always or almost always’ and ‘A lot of the time’ answers). The GPPS responses are weighted and in the data presentation, a 95% confidence interval is given for each practice of the combined estimates of the two options. GPPS = GP Patient Survey. IQR = interquartile range. PHE = Public Health England. QOF = Quality and Outcomes Framework. SD = standard deviation.