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Table 1 Characteristics of the patients according to the LDL levels at baseline

From: The analysis of the lipid levels in patients with coronary artery disease after percutaneous coronary intervention: a one-year follow-up observational study

Characteristics LDL-C levels
< 2.59 2.59- < 3.37 3.37- < 4.14 4.14- < 4.92 ≥4.92 χ2 P-value
Age (years), n(%)       29.793 0.073
 28–29 0 (0.0) 0 (0.0) 1 (100.0) 0 (0.0) 0 (0.0)   
 30–39 5 (38.5) 4 (30.8) 2 (15.4) 2 (15.4) 0 (0.0)   
 40–49 14 (29.2) 9 (18.8) 18 (37.5) 5 (10.4) 2 (4.2)   
 50–59 41 (30.4) 42 (31.1) 39 (28.9) 9 (6.7) 4 (3.0)   
 60–69 71 (44.7) 39 (24.5) 31 (19.5) 16 (10.1) 2 (1.3)   
  ≥ 70(%) 76 (45.8) 48 (28.9) 25 (15.1) 12 (7.2) 5 (3.0)   
Gender, n(%)       0.637 0.959
 Male 156 (39.7) 108 (27.5) 88 (22.4) 31 (7.9) 10 (2.5)   
 Female 51 (39.5) 34 (26.4) 28 (21.7) 13 (10.1) 3 (2.3)   
BMI (kg/m2), n(%)       11.543 0.483
  < 18.5 4 (36.4) 3 (27.3) 3 (27.3) 0 (0.0) 1 (9.1)   
 18.5- < 24.0 110 (41.5) 75 (28.3) 53 (20.0) 23 (8.7) 4 (1.5)   
 24.0- < 28.0 68 (38.0) 50 (27.9) 38 (21.2) 16 (8.9) 7 (3.9)   
  ≥ 28.0 25 (37.3) 14 (20.9) 22 (32.8) 5 (7.9) 1 (1.5)   
Education, n(%)       5.006 0.958
 Primary school 32 (42.7) 19 (25.3) 15 (20.0) 7 (9.3) 2 (2.7)   
 Middle school 82 (38.5) 58 (27.2) 51 (23.9) 16 (7.5) 6 (2.8)   
 High school 81 (40.1) 53 (26.2) 43 (21.3) 20 (9.9) 5 (2.5)   
  > High school 12 (37.5) 12 (37.5) 7 (21.9) 1 (3.1) 0 (0.0)   
Residence, n(%)       0.267 0.992
 Urban 132 (40.4) 88 (26.9) 71 (21.7) 28 (8.6) 8 (2.4)   
 Rural 75 (38.5) 54 (27.7) 45 (23.1) 16 (8.2) 5 (2.6)   
Smoking, n(%)       12.097 0.147
 Never 131 (43.2) 78 (25.7) 65 (21.5) 22 (7.3) 7 (2.3)   
 Former 22 (50.0) 11 (25.0) 6 (13.6) 3 (6.8) 2 (4.5)   
 Current 54 (31.0) 53 (30.5) 45 (25.9) 19 (10.9) 3 (1.7)   
Drinking, n(%)       4.553 0.336
 Yes 23 (39.0) 11 (18.6) 16 (27.1) 6 (10.2) 3 (5.1)   
 No 184 (39.7) 131 (28.3) 100 (21.6) 38 (8.2) 10 (2.2)   
Occupation, n(%)       12.719 0.122
 Light 179 (41.7) 115 (26.8) 93 (21.7) 31 (7.2) 11 (2.6)   
 Medium 27 (30.3) 24 (27.0) 23 (25.8) 13 (14.6) 2 (2.2)   
 others 1 (25.0) 3 (75.0) 0 (0.0) 0 (0.0) 0 (0.0)   
Famliy monthly income per capita, n(%)      9.987 0.617
  < 1000 0 (0.0) 0 (0.0) 1 (100.0) 0 (0.0) 0 (0.0)   
 1000–3000 58 (37.2) 41 (26.3) 40 (25.6) 13 (8.3) 4 (2.6)   
 3000–6000 135 (41.7) 85 (26.2) 68 (21.0) 29 (9.0) 7 (2.2)   
  > 6000 14 (34.1) 16 (39.0) 7 (17.1) 2 (4.9) 2 (4.9)   
Diet control, n(%)       5.948 0.203
 No 39 (31.7) 33 (26.8) 34 (27.6) 13 (10.6) 4 (3.3)   
 Yes 168 (42.1) 109 (27.3) 82 (20.6) 31 (7.8) 9 (2.3)   
Daily staple food intake, n(%)      12.308 0.138
 Rice 185 (38.8) 128 (26.8) 112 (23.5) 40 (8.4) 12 (2.5)   
 Noodle 1 (14.3) 3 (42.9) 1 (14.3) 2 (28.6) 0 (0.0)   
 Rice+Noodle 21 (55.3) 11 (28.9) 3 (7.9) 2 (5.3) 1 (2.6)   
Physical activity, n(%)      6.349 0.175
 No 5 (20.0) 8 (32.0) 8 (32.0) 4 (16.0) 0 (0.0)   
 Yes 202 (40.6) 134 (27.0) 108 (21.7) 40 (8.0) 13 (2.6)   
  1. LDL-C low-density lipoprotein cholesterol, BMI body mass index