National survey of risk factors for non-communicable disease in Vietnam: prevalence estimates and an assessment of their validity

Table 4 Participants who reported taking prescribed medication for raised blood pressure (BP) or having been diagnosed previously with hypertension, and estimated prevalence of hypertension with these factors taken into account

	Thai Nguyen		Hoa Binh		Ha Noi		Hue		Binh Dinh		Dak Lak		HCMC		Can Tho		Total
	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI
Men
BP medication^a	0.82	±0.64	1.57	±1.71	1.71	±0.61	1.56	±0.59	1.32	±0.56	1.89	±1.25	3.98	±1.28	4.23	±1.62	2.35	±0.49
Prior diagnosis^b	6.70	±1.75	6.32	±2.10	7.96	±2.14	5.55	±1.41	5.59	±1.35	6.23	±1.98	10.1	±1.96	12.4	±2.79	8.21	±0.88
Raised BP 1^c	20.1	±3.33	20.2	±2.74	15.7	±3.01	16.2	±3.09	21.5	±3.27	25.5	±3.77	17.3	±3.10	17.0	±3.11	18.5	±1.29
Raised BP 2^d	20.3	±3.31	21.3	±3.62	16.2	±3.03	16.9	±3.06	21.6	±3.28	25.8	±3.77	19.3	±3.19	18.8	±3.35	19.4	±1.38
Raised BP 3^e	21.9	±3.12	22.7	±3.75	19.8	±3.50	18.6	±3.16	22.8	±3.22	27.0	±3.72	23.7	±3.36	23.6	±3.42	22.4	±1.51
Women
BP medication^a	1.29	±0.52	1.50	±1.02	2.52	±0.94	3.48	±1.01	2.97	±0.82	2.07	±1.31	4.49	±1.26	7.95	±1.95	3.55	±0.47
Prior diagnosis^b	5.69	±1.63	5.54	±4.51	6.82	±1.56	8.18	±1.63	7.92	±1.40	8.66	±2.85	8.53	±1.86	15.9	±2.23	8.75	±0.81
Raised BP 1^c	9.05	±2.43	11.8	±3.28	7.69	±1.66	9.93	±1.88	10.4	±1.91	15.7	±3.64	9.09	±1.82	13.3	±2.19	10.2	±0.85
Raised BP 2^d	9.64	±2.47	12.0	±3.27	8.51	±1.72	10.8	±1.90	11.1	±1.80	16.0	±3.64	11.1	±2.07	16.9	±2.37	11.5	±0.90
Raised BP 3^e	11.2	±2.52	15.2	±4.58	10.9	±1.98	13.2	±2.08	13.0	±1.77	18.9	±3.66	14.2	±2.30	22.7	±2.55	14.6	±1.01

^aTaking medication for raised blood pressure, as indicated by a positive responses to the question “During the past two weeks, have you been treated for raised blood pressure with drugs (medication) prescribed by a doctor or other health worker?”
^bPreviously diagnosed with hypertension, as indicated by a positive response to the question “Have you ever been told by a doctor or other health worker that you have raised blood pressure or hypertension?”
^cSystolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg
^dSystolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg or taking medications for hypertension
^eSystolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg or taking medications for hypertension or previously diagnosed with hypertension

ISSN: 1471-2458