Table 2.
Process of care for patients with angina based on clinical records before and after introduction of computerised decision support system
| Computerised system (n=1117)
|
Controls (n=1218)
|
Odds ratio (95% CI)
|
|
|---|---|---|---|
| No of patients consulting during intervention period | 1084 | 1192 | |
| Mean (SD) No of consultations during intervention period | 8.5 (6.4) | 8.6 (6.2) | 1.01* (0.91 to 1.11) |
| Mean (SD) No of consultations for angina | 1.6 (2.4) | 1.6 (2.3) | 1.05* (0.83 to 1.33) |
| No (%) of patients consulting before and after intervention period | |||
| Blood pressure recorded: | |||
| All patients | 859 (77); 889(80) | 935 (77); 969 (80) | 1.01 (0.74 to 1.39) |
| Patients who consulted | 859 (79); 889 (82) | 935 (79); 969 (82) | 1.05 (0.75 to 1.46) |
| Exercise recorded or advised: | |||
| All patients | 99 (9); 113 (10) | 156 (13); 153 (13) | 0.91 (0.55 to 1.50) |
| Patients who consulted | 99 (9); 113 (10) | 156 (13); 153 (13) | 0.90 (0.54 to 1.48) |
| Weight recorded or advised: | |||
| All patients | 253 (23); 282 (26) | 288 (24); 362 (30) | 0.86 (0.54 to 1.35) |
| Patients who consulted | 253 (23); 282 (26) | 288 (24); 362 (30) | 0.87 (0.55 to 1.37) |
| Smoking status known: | |||
| All patients | 222 (20); 243 (22) | 261 (22); 378 (32) | 0.68 (0.42 to 1.11) |
| Patients who consulted | 222 (20); 243 (22) | 261 (22); 378 (32) | 0.68 (0.41 to 1.13) |
| Smoking education given: | |||
| All patients | 33 (3); 47 (4) | 41 (3); 48 (4) | 1.08 (0.86 to 1.77) |
| Patients who consulted | 33 (3); 47 (4) | 41 (3); 48 (4) | 1.09 (0.66 to 1.78) |
| 12 lead electrocardiogram recorded: | |||
| All patients | 162 (15); 154 (14) | 197 (16); 164 (14) | 1.01 (0.68 to 1.52) |
| Patients who consulted† | 84 (9) | 93 (8) | 0.94 (0.58 to 1.53) |
| Exercise electrocardiogram recorded: | |||
| All patients | 46 (4); 28 (3) | 46 (4); 30 (3) | 1.01 (0.56 to 1.80) |
| Patients who consulted† | 23 (2) | 24 (2) | 1.05 (0.56 to 1.98) |
| Haemoglobin concentration recorded: | |||
| All patients | 322 (29); 371 (33) | 355 (29); 400 (33) | 1.01 (0.72 to 1.42) |
| Patients who consulted† | 201 (29) | 204 (26) | 1.08 (0.74 to 1.56) |
| Thyroid function recorded: | |||
| All patients | 192 (17); 214 (19) | 215 (18); 264 (22) | 0.83 (0.62 to 1.12) |
| Patients who consulted† | 136 (16) | 151 (16) | 0.94 (0.67 to 1.33) |
| Cholesterol or other lipid concentrations recorded: | |||
| All patients | 395 (35); 482 (43) | 427 (35); 574 (47) | 0.85 (0.65 to 1.12) |
| Patients who consulted† | 482 (45) | 572 (48) | 0.87 (0.66 to 1.14) |
| Blood glucose or HbA1c concentrations recorded: | |||
| All patients | 221 (20); 300 (27) | 267 (22); 334 (27) | 0.96 (0.67 to 1.39) |
| Patients who consulted† | 300 (28) | 334 (28) | 0.97 (0.67 to 1.41) |
*
Effect sizes; estimates of ratio of mean number of consultations for participants in practices that received computerised decision support system to mean number of consultations for participants in control practices based on Poisson regression model.
†
Patients who consulted after intervention and had not had variable recorded anywhere in their clinical record during period before intervention.