Table 4. Association Between Hypertension And Specific Risk Factors In Multivariate Analysis*.

	Any hypertension SBP ≥ 140, DBP ≥ 90 mmHg			Grade 2 and 3 hypertension SBP ≥ 160, DBP ≥ 100 mmHg			Grade 3 hypertension SBP ≥ 180, DBP ≥ 110 mmHg
Parameters	OR	95% CI	p-value	OR	95% CI	p-value	OR	95% CI	p-value
Age group (years)
40–49	1.00			1.00		0.001	1.00		< 0.001
50–59	2.07	1.88–2.29	< 0.001	2.24	1.99–2.54	< 0.001	2.08	1.73–2.49	< 0.001
60–69	3.24	2.93–3.58	< 0.001	3.39	2.99–3.84	< 0.001	2.99	2.48–3.61	< 0.001
70–79	3.91	3.41–4.49	< 0.001	4.10	3.51–4.80	< 0.001	3.80	3.06–4.72	< 0.001
≥ 80	4.24	3.51–5.13	< 0.001	4.63	3.79–5.65		4.20	3.24–5.44
Gender
Male	1.00			1.00			1.00
Female	1.26	1.16–1.37	< 0.001	1.44	1.31–1.58	< 0.001	1.36	1.18–1.56	< 0.001
Residence
Rural	1.00			1.00			1.00
Urban	1.31	1.14–1.49	< 0.001	1.32	1.12–1.54	< 0.001	1.33	1.10–1.6	< 0.003
Geo-political zones
North-east	3.81	2.94–4.92	< 0.001	3.14	2.40–4.1	< 0.001	3.16	.24–4.45	< 0.001
South-east	1.27	1.06–1.53	0.012	1.21	0.97–1.5	0.094	1.35	1.00–1.82	0.053
South-south	1.00			1.00			1.00
North-west	2.53	2.14–2.98	< 0.001	1.89	1.52–2.36	0.001	1.74	1.29–2.34	< 0.001
South-west	1.16	0.98–1.38	0.090	1.07	0.86–1.33	0.536	1.20	0.90–1.59	0.208
North-central	1.29	1.05–1.58	0.016	1.04	0.81–1.03	0.766	1.07	0.79–1.46	0.644
Socio-economic status
Affluent	1.00			1.00			1.00
Moderately affluent	0.97	0.88–1.06	0.473	0.91	0.81–1.03	0.130	0.94	0.80–1.11	0.467
Least affluent	1.09	0.97–1.22	0.128	1.14	1.00–1.29	0.056	1.17	0.99–1.39	0.063
Body mass index (13 352)
Underweight	0.68	0.60–0.77	< 0.001	0.69	0.60–0.8	< 0.001	0.74	0.61–0.9	0.003
Normal	1.00			1.00			1.00
Overweight	1.69	1.53–1.86	< 0.001	1.63	1.46–1.82	< 0.001	1.59	1.39–1.82	< 0.001
Obese	2.61	2.23–3.05	< 0.001	2.53	2.16–2.97	< 0.001	2.35	1.92–2.87	< 0.001

*Literacy was excluded from the multivariate model as it was associated with socioeconomic status.