Lower or higher HDL-C levels are associated with cardiovascular events in the general population in rural China

Table 1 Baseline Characteristics of the present study

	High-Density Lipoprotein Cholesterol Category, mmol/L
Variables	< 1.0	1.0–1.49	1.50–1.99	2.0–2.49	≥2.5	P value
Age, mean ± SD	53.11 ± 10.50	53.82 ± 10.47*	53.74 ± 10.50	54.41 ± 10.43*	55.64 ± 10.13*^#†	0.023
Men (%)	57.5	44.4*	43.4*	53.7^#†	70.8*^#†‡	< 0.001
Current smokers (%)	39.3	33.2*	34.5*	45.8*^#†	61.1*^#†‡	< 0.001
Current drinker (%)	14.6	18.7*	26.7*^#	43.2*^#†	70.1*^#†‡	< 0.001
Physical activity		*	*^#	*^#†	*^#	< 0.001
Light	41.5	37.2	33.9	26.5	27.1
Moderate	20.2	19.0	18.1	16.0	17.4
Severe	38.3	43.8	48.0	57.5	55.6
Annual income < 5000 CNY/year	11.4	11.1	12.4	13.9	24.3*^#†‡	< 0.001
Chronic diseases (%)	28.3	24.9*	23.8*	20.9*^#	19.4*^#	0.003
Total Cholesterol, mmol/L	4.66 ± 0.93	5.19 ± 1.07*	5.41 ± 1.05*^#	5.70 ± 1.16*^#†	5.96 ± 1.32*^#†‡	< 0.001
Low density Lipoprotein Cholesterol, mmol/L	2.69 ± 0.73	2.98 ± 0.83*	2.99 ± 0.85*	3.00 ± 0.89*	2.81 ± 0.87^#†‡	< 0.001
Systolic blood pressure, mmHg	141.15 ± 23.71	141.11 ± 23.17	143.15 ± 23.69*^#	145.48 ± 22.88*^#†	151.83 ± 25.23*^#†‡	< 0.001
Diastolic blood pressure, (mmHg)	82.25 ± 12.14	81.89 ± 11.66*	81.96 ± 11.67*	82.65 ± 11.79	84.53 ± 12.67^#†	0.001
Body mass index, kg/m²	26.35 ± 3.71	25.17 ± 3.62*	24.07 ± 3.61*^#	23.32 ± 3.10*^#†	22.99 ± 3.23*^#†	< 0.001

^*P < 0.05 vs. < 1.0 mmol/L, ^#P < 0.05 vs. 1.0–1.49 mmol/L, ^†P < 0.05 vs. 1.50–1.99 mmol/L, ^‡P < 0.05 vs. 2.0–2.49 mmol/L.

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