Self-reported hypertension in Northern China: a cross-sectional study of a risk prediction model and age trends

Table 3 Univariable and multivariable analysis of predictors of self-reported HTN among residents of Inner Mongolia

Characteristic	Univariable Analysis OR (95%CI)	P	Multivariable Analysis OR (95%CI)^a	P
Age	1.07 (1.07, 1.07)	< 0.001^*	1.07 (1.07, 1.08)	< 0.001^*
Gender (Male)
Female	1.16 (1.07, 1.27)	0.001^*	1.22 (1.08, 1.37)	< 0.001^*
Ethnicity (Han)
Hui	1.93 (1.38, 2.70)	< 0.001^*	1.37 (0.79, 2.36)	0.267
Mongolian	0.81 (0.72, 0.92)	0.001^*	1.15 (1.00, 1.33)	0.068
Other minority	1.10 (0.90, 1.36)	0.376	1.66 (1.29, 2.13)	< 0.001^*
Level of education (High)
Low	2.00 (1.73, 2.31)	< 0.001^*
Middle	1.32 (1.10, 1.59)	0.003^*
Occupation (Unemployed)
Retired	2.31 (2.06, 2.59)	< 0.001^*
Employed	4.24 (3.78, 4.75)	< 0.001^*
Marital status (Single)
Widowed, Divorced	21.93 (15.67, 30.68)	< 0.001^*	1.82 (1.22, 2.72)	0.004^*
Married	9.08 (6.64, 12.43)	< 0.001^*	2.05 (1.42, 2.95)	< 0.001^*
Poverty (No)
Yes	1.48 (1.30, 1.69)	< 0.001^*
Smoking (No smoking)
Current smoking	0.99 (0.90, 1.09)	0.811
Former smoking	1.86 (1.52, 2.27)	< 0.001^*
Drinking (No)
Yes	0.91 (0.83, 1.01)	0.091	1.19 (1.01, 1.32)	0.035^*
BMI (< 24)
≥ 24	2.20 (2.01, 2.39)	< 0.001^*	2.49 (2.25, 2.76)	< 0.001^*
Comorbidity (No)
Yes	4.09 (3.67, 4.56)	< 0.001	2.06 (1.82, 2.34)	< 0.001^*

Variables in brackets are reference categories
^*P < 0.05
^aCommon confounders adjusted for in the multiple logistic regression included age, gender, ethnicity, level of education, occupation, marital status, smoking, drinking, BMI, and comorbidity