Table 3.
Changes in Seattle Angina Questionnaire after 6 weeks and 6 months according to how the diagnosis of angina pectoris due to coronary heart disease changed in patients allocated to CT coronary angiography
| Diagnosis of angina pectoris due to CHD refuted | New diagnosis of angina pectoris due to CHD | Unchanged diagnosis | p Value* | |
|---|---|---|---|---|
| Total patients (n) | 310 | 171 | 1588 | |
| Change at 6 weeks (n) | 277 | 158 | 1320 | |
| Physical limitation | −2.4±1.3 (166) | −3.3±1.3 (100) | 0.21±0.6 (816) | 0.0053 |
| Angina stability | 20.4±2.0 (261) | 8.9±2.9 (146) | 16.8±1.0 (1230) | 0.4434 |
| Angina frequency | 7.9±1.6 (266) | 7.2±1.8 (152) | 12.4±0.6 (1266) | <0.0001 |
| Treatment satisfaction | −7.8±1.0 (264) | −7.9±1.4 (150) | −6.7±0.5 (1261) | 0.4938 |
| Quality of life | 9.7±1.5 (261) | 4.1±1.6 (151) | 9.0±0.6 (1269) | 0.0137 |
| Change at 6 months (n) | 252 | 139 | 1171 | |
| Physical limitation | 1.9±1.6 (158) | −3.5±2.0 (84) | 2.1±0.7 (695) | 0.0121 |
| Angina stability | 18.1±2.0 (242) | 7.8±3.3 (128) | 13.0±1.1 (1092) | 0.8572 |
| Angina frequency | 15.8±1.6 (245) | 13.4±2.2 (134) | 19.5±0.7 (1119) | <0.0001 |
| Treatment satisfaction | −6.8±1.3 (238) | −7.3±1.7 (131) | −4.4±0.5 (1116) | 0.0510 |
| Quality of life | 15.8±1.6 (237) | 10.4±2.0 (132) | 16.0±0.7 (1115) | 0.0060 |
Mean±SE (n).
Changes in diagnosis reflect those recorded by the attending clinician at 6 weeks postclinic attendance.
*Analysis of variance across the three groups.
CHD, coronary heart disease.