Table 2. Baseline Characteristics of Statin-Treated Patients Stratified by Treatment Intensity.
| Characteristics | Total NO (%) | Intensive Statin Therapy NO (%) | Less Intensive Statin Therapy NO (%) | P value |
|---|---|---|---|---|
| All patients | 11,010* | 5106 (46.4) | 5904 (53.6) | 0.002 |
| Demographic | ||||
| Age, years | ||||
| <55 | 2491(22.6) | 1216(23.8) | 1275(21.6) | 0.826 |
| 55–64 | 2647(24.0) | 1252(24.5) | 1395(23.6) | |
| 65–74 | 3177(28.8) | 1400(27.4) | 1777(30.1) | |
| ≥75 | 2695(24.5) | 1238(24.2) | 1457(24.7) | |
| Gender | ||||
| Female | 3230(29.3) | 1378(26.9) | 1852(31.4) | <0.001 |
| CVD risk factors | ||||
| Prior hypertension | 5921(53.8) | 2848(55.8) | 3073(52.0) | <0.001 |
| Prior diabetes | 2446(22.2) | 1272(24.9) | 1174(19.9) | <0.001 |
| Prior dyslipidemia | 7229(65.7) | 3619(70.9) | 3610(61.1) | <0.001 |
| Current smoker | 4118(37.4) | 2041(39.9) | 2077(35.2) | <0.001 |
| Medical histories | ||||
| Myocardial infarction | 1239(11.3) | 604(11.8) | 635(10.8) | 0.075 |
| Ischemic stroke | 1136(10.3) | 511(10.1) | 625(10.6) | 0.319 |
| Hemorrhagic stroke | 132(1.2) | 61(1.2) | 71(1.2) | 0.969 |
| Clinical characteristics at admission | ||||
| Chest pain | 10224(92.9) | 4757(93.4) | 5457(92.4) | 0.058 |
| Cardiac arrest | 137(1.2) | 68(1.3) | 69(1.2) | 0.441 |
| Cardiac shock | 450(4.1) | 216(4.2) | 234(3.9) | 0.481 |
| AMI type | ||||
| STEMI | 9344(84.9) | 4223(82.7) | 5121(86.7) | <0.001 |
| Laboratory test | ||||
| LDL-C level, mmol/L | <0.001 | |||
| < 1.81 | 1140(10.4) | 529(10.4) | 611(10.3) | |
| 1.81–2.59 | 2952(26.8) | 1405(27.5) | 1547(26.2) | |
| 2.60–3.37 | 3091(28.1) | 1499(29.3) | 1592(27.0) | |
| >3.37 | 2251(20.4) | 1137(22.3) | 1114(18.9) | |
| Unmeasured | 1576(14.3) | 536(10.5) | 1040(17.6) | |
| Economic-geographic region | 0.872 | |||
| Eastern | 6585(59.8) | 3436(67.3) | 3149(53.3) | |
| Central | 2224(20.2) | 843(16.5) | 1381(23.4) | |
| Western | 2201(20) | 827(16.2) | 1374(23.3) | |
| Urban/Rural | ||||
| Rural | 3708(33.7) | 1165(22.8) | 2543(43.1) | <0.001 |
| Urban | 7302(66.3) | 3941(77.2) | 3361(56.9) | |
| Year | ||||
| 2001 | 592(5.4) | 6(0.1) | 586(9.9) | <0.001 |
| 2006 | 2956(26.8) | 729(14.3) | 2227(37.7) | |
| 2011 | 7462(67.8) | 4371(85.6) | 3091(52.4) |
*Note: 11,268 patients received statin therapy; however, the dose was not documented in the medical record of 258 patients and were excluded from this table, leaving11,010 patients whose statin dose was definitively recorded.
AMI indicates acute myocardial infarction;
STEMI indicates ST-segment elevation myocardial infarction;
LDL-C indicates low density lipid cholesterol.