Table 2.
Uncoded and coded CKD Read codes in an adult population with biochemical CKD stage 3–5, by selected quality-of-care characteristics
| Variable | Uncoded CKD (N = 5086) | Coded CKD (N = 4239) | P-value | ||
|---|---|---|---|---|---|
|
|
|
||||
| n | % | n | % | ||
| BP | |||||
| Mean systolic BP<140 mmHg | 1411 | 27.7 | 1720 | 40.6 | 0.80 |
| Missing | 2868 | 56.4 | 1550 | 36.6 | |
| Mean diastolic BP <90 mmHg | 2012 | 39.6 | 2535 | 59.8 | <0.001 |
| Missing | 2868 | 56.4 | 1550 | 36.6 | |
|
| |||||
| BMI | |||||
| >25 kg/m2 | 3262 | 64.1 | 2945 | 69.5 | 0.03 |
| Missing | 547 | 10.8 | 258 | 6.1 | |
|
| |||||
| Comorbidity history | |||||
| Current or ex-smoker | 702 | 13.8 | 458 | 10.8 | <0.001 |
| Missing | 21 | 0.4 | 3 | 0.1 | |
| Prescribed NSAID | 1394 | 27.4 | 884 | 20.9 | <0.001 |
| Prescribed diuretic | 1523 | 29.9 | 2066 | 48.7 | <0.001 |
| Prescribed ACEi/ARB | 2210 | 43.5 | 3183 | 75.1 | <0.001 |
| Prescribed statin | 2157 | 42.4 | 2849 | 67.2 | <0.001 |
ACEi = angiotensin-converting enzyme inhibitor. ARB = angiotensin receptor blocker. BMI = body mass index. BP = blood pressure. CKD = chronic kidney disease. NSAID = non-steroidal anti-inflammatory drug.