Table 1

Patient characteristics and standardised differences before and after propensity score matching

All patients
n=7071
Propensity score matched patients
n=3546
HLP
n=4809
No HLP
n=2262
Absolute
standardised
difference
AMI with HLP
n= 2091
AMI with no HLP
n=
Absolute
Standardised
Difference
Demographics
 Age, years (mean±SD)67.1±13.871.1±14.00.28769.7±13.570.6±14.20.066
 Male, n (%)3255 (68)1419 (63)0.1041325 (63)1325 (63)0
 White, n (%)4458 (93)2011 (89)0.1321887 (90)1887 (90)0
Anthropometric measurements
 BMI (kg/m2)30.0±6.228.9±6.629.4±6.229.0±6.7
 BMI, missing n (%)743 (16)540 (24)532 (25)472 (23)
Clinical characteristics
 LOS, days, median (quartiles 25%–75%)3.0 (2 to 5)4.0 (3 to 8)0.2944.0 (3 to 6)4.0 (3 to 7)0.107
Year of hospital admission
 2001, n (%)146 (3)190 (8)0.752141 (7)145 (7)
 2002, n (%)355 (7)375 (17)336 (16)327 (16)
 2003, n (%)325 (7)435 (19)287 (14)395 (19)
 2004, n (%)474 (10)368 (16)323 (15)351 (17)
 2005, n = (%)581 (12)245 (11)330 (16)232 (11)
 2006, n (%)555 (12)179 (8)221 (11)173 (8)
 2007, n (%)537 (11)131 (6)160 (8)131 (6)
 2008, n (%)492 (10)122 (5)101 (5)120 (6)
 2009, n (%)462 (10)96 (4)83 (4)96 (5)
 2010, n (%)548 (11)80 (4)75 (4)80 (4)
 2011 n = (%)334 (7)41 (2)34 (2)41 (2)0.029
Comorbid conditions
 Cancer, n (%)378 (8)187 (8)0.015187 (9)173 (8)0.025
 CKD, n (%)470 (10)221 (10)0.0001194 (9)198 (10)0.006
 COPD, n (%)430 (9)302 (13)0.14256 (12)265 (13)0.014
 Diabetes, n (%)1388 (29)598 (26)0.054525 (25)551 (26)0.028
 Heart failure, n (%)832 (17)601 (27)0.225482 (23)530 (25)0.056
 Hypertension, n (%)3376 (70)1296 (57)0.2711264 (60)1240 (59)0.02409
 Stroke, n (%)192 (4)74 (3)0.03969 (3)73 (4)−0.01023
Lipid levels
 LDL-C (mg/dL)112.8±38.473.2±18.7117.9±37.473.5±18.7
 LDL-C, missing data n (%)240 (5)467 (21)101 (5)424 (20)
Drug treatment
 Statin, n (%)2714 (56)795 (35)0.437814 (39)783 (37)0.03046
  • BMI, body mass index; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; LDL-C, low-density lipoprotein cholesterol; LOS, length of stay.