The three most commonly extracted Read terms in 1995 and 2014 for (1) any category and (2) for each category 1–4
| Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1995 | 2014 | ||||||||
| Category | Read term | Read code | No. | Per cent | Read term | Read code | No. | Per cent | |
| Any | Type 2 diabetes mellitus | C10F.00 | 2559 | 31 | Type 2 diabetes mellitus | C10F.00 | 10 017 | 55 | |
| Diabetes mellitus | C10.00 | 2046 | 25 | Seen in diabetic clinic | 9N1Q.00 | 5727 | 32 | ||
| Non-insulin-dependent diabetes mellitus | C109.00 | 1702 | 20 | Diabetes mellitus | C10.00 | 753 | 4 | ||
| 1 | Insulin-dependent diabetes mellitus | C100011 | 484 | 59 | Type 1 diabetes mellitus | C108.12 | 361 | 90 | |
| Type 1 diabetes mellitus | C108.12 | 256 | 31 | Insulin-dependent diabetes mellitus | C100011 | 18 | 4 | ||
| IDDM-insulin-dependent diabetes mellitus | C108.11 | 38 | 5 | Type 1 diabetes mellitus with ketoacidosis | C10EM00 | 12 | 3 | ||
| 2 | Type 2 diabetes mellitus | C10F.00 | 2559 | 53 | Type 2 diabetes mellitus | C10F.00 | 10 017 | 97 | |
| Non-insulin-dependent diabetes mellitus | C109.00 | 1702 | 35 | Non-insulin-dependent diabetes mellitus | C109.00 | 137 | 1 | ||
| Maturity onset diabetes | C100111 | 421 | 9 | Type II diabetes mellitus | C10F.11 | 58 | 1 | ||
| 3 | Diabetes mellitus | C10.00 | 2046 | 97 | Diabetes mellitus | C10.00 | 753 | 97 | |
| Diabetes mellitus, adult onset, no mention of complication | C100100 | 52 | 2 | Secondary diabetes mellitus | C10N.00 | 7 | 1 | ||
| Diabetes mellitus with no mention of complication | C100.00 | 12 | 1 | Cystic fibrosis-related diabetes mellitus | C10N100 | 3 | 0 | ||
| 4 | Attending diabetes clinic | 9NM0.00 | 153 | 29 | Seen in diabetic clinic | 9N1Q.00 | 5727 | 86 | |
| H/O: diabetes mellitus | 1434 | 139 | 26 | O/E—Right diabetic foot at low risk | 2G5E.00 | 172 | 3 | ||
| Seen in diabetic clinic | 9N1Q.00 | 75 | 14 | Diabetic annual review | 66AS.00 | 128 | 2 | ||
Each patient is counted only once and the Read term is the earliest to be recorded in the patient's assigned category.