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. 2013 Sep 10;8(9):e74634. doi: 10.1371/journal.pone.0074634

Table 1. Characteristics of Participants According to Quintile Groups of Non-High-Density Lipoprotein Cholesterol at baseline.

Quintile*
P value
Q1 Q2 Q3 Q4 Q5
Median non-HDLC, mg/dl 87.0 112.5 130.3 149.3 179.8 <0.01
Number of persons 19180 19230 19083 19235 19188 <0.01
Male,% 79.3 78.0 79.6 80.3 80.9 <0.01
Age, year 51.0 51.2 51.3 51.8 52.3 <0.01
Smoking,%
never 63.7 64.1 62.1 57.3 55.3 <0.01
former 5.2 4.9 4.9 5.7 6.0 <0.01
occasional 3.8 3.3 3.6 3.7 3.5 <0.01
daily 27.3 27.7 29.4 33.4 35.4 <0.01
Drinking,%
never 61.4 62.5 61.4 56.0 54.6 <0.01
former 3.6 3.1 3.3 3.7 3.7 <0.01
occasional 19.3 19.1 18.9 20.7 19.4 <0.01
daily 15.8 15.3 16.4 19.6 22.4 <0.01
Physical activity,%
inactive 7.3 7.6 8.2 9.7 10.5 <0.01
moderate 79.7 78.5 78.1 74.2 71.2 <0.01
very 12.9 13.9 13.7 16.1 18.3 <0.01
Education,%
illiteracy or primary school 10.5 9.0 9.1 10.2 11.8 <0.01
middle school 80.5 83.5 84.6 83.3 82.6 <0.01
≥college 9.0 7.5 6.2 6.5 5.6 <0.01
Hypertension,% 40.6 40.8 43.4 44.7 49.5 <0.01
Diabetes,% 7.3 7.3 8.0 9.8 13.5 <0.01
Body mass index, kg/m2 24.1 24.5 24.8 25.2 25.5 <0.01
Systolic blood pressure, mmHg 125.0 126.7 129.3 130.0 130.0 <0.01
Diastolic blood pressure, mmHg 80.0 80.0 80.0 80.7 82.0 <0.01
Fasting blood glucose, mg/dl 89.6 90.5 91.9 93.5 95.9 <0.01
Total cholesterol, mg/dl 146.2 170.5 189.1 206.9 239.8 <0.01
HDLC, mg/dl 61.5 58.4 58.0 56.5 56.8 <0.01
Triglyceride, mg/dl 95.7 78.0 79.6 80.3 80.9 <0.01

Abbreviation: HDLC = high-density lipoprotein cholesterol.

*

Q1 represents the lowest fifth of the data (1-20%), Q2 represents the second lowest fifth (21-40%), Q3 represents the middle fifth (41-60%), Q4 represents the second highest fifth (61-80%), and Q5 represents the highest fifth (81-100%).