Table 1.

Patient characteristics (n = 362).

Factors	Items	N	%	Medication literacy	t/F value	P-value
Gender	Male	187	51.7	24.35 ± 4.98	1.986	0.048
	Female	175	48.3	23.39 ± 4.24
Education level	Junior middle school or below	217	60	22.56 ± 4.73	30.746	0.000
	Senior high school or secondaryspecialized school	88	24.3	24.94 ± 3.37a
	Junior college or above	57	15.7	27.30 ± 3.93ab
Annual income	< 30,000/year	150	41.4	22.97 ± 4.91	5.419	0.005
	30,000–49,999/year	110	30.4	24.80 ± 4.38a
	≥50,000/year	102	28.2	24.25 ± 4.36a
Marital status	Married	320	88.4	23.93 ± 4.71	0.032	0.974
	Single	42	11.6	23.54 ± 4.27
Duration of hypertension	< 5 years	106	29.3	22.97 ± 4.89	7.153	0.001
	5–9.9 years	119	32.9	25.15 ± 4.59a
	≥10 years	137	37.8	23.50 ± 4.31b
Family history of hypertension	Yes	196	54.1	24.28 ± 4.45	1.746	0.082
	No	166	45.9	23.42 ± 4.86
Number of antihypertensive drugs prescribed	One	233	64.4	23.57 ± 4.07	5.639	0.004
	2–3 kinds	118	32.6	24.81 ± 5.29a
	4 or more	11	3	20.66 ± 6.81ab
Hypertension complication	Yes	121	33.4	23.28 ± 4.93	1.739	0.083
	No	241	66.6	24.19 ± 4.49
Number of co-lived person	1 or 0	32	8.8	23.30 ± 4.34	10.587	0.000
	2–4	194	53.6	24.89 ± 4.84
	≥5–7	136	37.6	22.59 ± 4.11b

^aCompared with the first layer, P < 0.05;

^bCompared with the second layer, P < 0.05.