Table 3. Univariate analysis of factors influencing the QoL in 500 rural middle-aged and elderly patients with hypertension in Xuan'en County (Mean±SD).

Variable		PCS		MCS
		Mean±SD	p-value	Mean±SD	p-value
Gender			0.711		0.092
	Male	31.49±9.60		42.30±10.67
	Female	31.80±9.43		40.67±10.67
Age group (in years)			0.131		0.696
	45–54	33.67±10.47		41.86±12.09
	55–64	31.65±8.98		41.37±10.17
	65–74	32.15±9.73		40.79±11.10
	75+	30.30±9.03		42.12±9.92
Nationality			0.769		0.173
	Han	31.96±9.82		40.73±10.08
	Tujia	31.36±9.01		42.25±10.94
	Other minorities	32.00±10.31		40.10±10.95
Education level			0.013		0.068
	Elementary school or below	31.22±9.47		40.93±10.81
	Middle school	34.84±9.36		42.83±10.02
	High school or above	30.53±8.90		45.70±9.33
Marital status			0.708		0.453
	Single	31.41±10.35		40.80±11.06
	Married	31.76±9.17		41.60±10.55
Years of hypertension			0.153		0.047
	≤3	32.80±9.58		42.62±0.48
	4–6	31.26±9.67		42.19±10.11
	≥7	30.96±9.23		40.08±11.03
Number of comorbid diseases			<0.0001		<0.0001
	0	33.32±9.96		43.87±10.45
	1	31.01±9.28		39.79±10.13
	≥2	28.78±7.81		38.39±11.16
Family monthly income (yuan)			0.218		0.004
	<3,000	31.59±9.30		40.79±10.66
	3,000–5,000	30.65±9.43		44.86±10.09
	>5,000	34.84±12.66		46.68±10.06
Sleep quality status			<0.0001		<0.0001
	Badly	29.02±8.81		38.60±10.93
	General	32.74±9.39		43.37±9.94
	Well	36.08±9.19		45.24±9.24
Smoking status			0.821		0.435
	Yes	31.50±9.63		42.04±10.42
	No	31.72±9.47		41.17±10.78
Alcohol intake			0.180		0.103
	Yes	32.78±10.09		42.91±10.20
	No	31.37±9.33		40.99±10.79
Regular tea-drinking			0.016		0.004
	Yes	32.50±9.64		42.51±10.21
	No	30.42±9.17		39.70±11.18
Moderate physical activity per week			<0.0001		<0.0001
	None	29.62±10.02		38.54±10.87
	1–4 days	28.61±7.81		38.56±9.78
	>5 days	32.97±9.37		42.92±10.51

PCS: Physical component summary; MCS: Mental component summary.