Table 1.

Baseline characteristics of the patients according to quartiles of serum amyloid A (HDL)

CharacteristicQuartile 1 (n=288)Quartile 2 (n=288)Quartile 3 (n=288)Quartile 4 (n=288)P Value
SAA(HDL)1.82 (0.65)4.01 (0.85)8.35 (1.82)20.29 (6.00)
SP-B(HDL)7.76 (8.86)8.71 (8.34)9.31 (8.38)12.96 (11.80)<0.001
Age, yr65.6 (9.2)65.9 (8.2)67.3 (8.1)66.5 (7.6)0.09
Body mass index, kg/m227.5 (4.8)28.1 (4.8)27.7 (4.9)26.9 (4.6)0.02
Sex (men), %173 (60)145 (50)143 (50)167 (58)0.02
Nonsmoker, n (%)168 (58)183 (64)178 (62)159 (56)0.26
History, n (%)
 Arrhythmia39 (14)50 (17)53 (18)70 (24)0.01
 Coronary artery disease91 (32)76 (26)80 (28)96 (33)0.23
 Congestive heart failure95 (33)81 (28)100 (35)136 (47)<0.001
 Transitory ischemic attack55 (19)48 (17)54 (19)47 (16)0.76
Systolic BP, mmHg147 (23)146 (22)145 (21)145 (21)0.49
Diastolic BP, mmHg76 (11)77 (11)75 (11)76 (10)0.39
Total cholesterol, mg/dl226.6 (45.3)223.1 (40.9)219.2 (40.3)208.7 (39.8)<0.001
LDL cholesterol, mg/dl125 (29)129 (30)128 (30)121 (28)<0.01
HDL cholesterol, mg/dl35 (13)37 (13)38 (14)35 (13)0.02
Apolipoprotein A-I, mg/dl127.8 (25.6)129.1 (23.3)127.3 (23.5)120.8 (21.3)<0.001
Triglycerides, mg/dl263.5 [216.5]214.0 [161.5]196.5 [149.5]207.0 [173.5]<0.001
Phosphate, mg/L6.2 (1.5)6.0 (1.5)6.0 (1.6)6.0 (1.8)0.33
C-reactive protein, mg/L2.9 [4.4]4.7 [9.1]8.0 [7.4]11.1 [15.8]<0.001
Albumin, g/dl3.9 (0.3)3.9 (0.3)3.8 (0.3)3.7 (0.3)<0.001
Hemoglobin, g/dl10.9 (1.2)11.1 (1.3)11.1 (1.4)10.6 (1.4)<0.001
HbA1c, %6.6 (1.2)6.8 (1.2)6.7 (1.2)6.8 (1.3)0.22
  • Data shown are means (SDs) or medians [interquartile ranges] if not otherwise mentioned. P values for comparison of groups were derived from ANOVA models (for continuous variables) or logistic regression models (for categorical variables).