Estimated net endogenous acid production and risk of prevalent and incident hypertension in community-dwelling older people

Table 3 Logistic regression linking to quartiles of energy adjusted estimated net endogenous acid production to prevalent hypertension (n = 3956)

	Quartiles of energy adjusted estimated NEAP (g/mEq)				Ptrend1
	Q1 (n = 987)	Q2 (n = 991)	Q3 (n = 989)	Q4 (n = 989)
No. of case and control	719/268	742/249	744/245	769/220
Unadjusted OR (95%CI)	1 (reference)	1.11 (0.91-1.36)	1.13 (0.93-1.38)	1.30 (1.06-1.60)	0.014
Age and sex adjusted OR (95%CI)	1 (reference)	1.11 (0.91-1.36)	1.13 (0.92-1.38)	1.29 (1.05-1.58)	0.020
2Multivariable adjusted OR (95%CI)	1 (reference)	1.22 (0.97-1.52)	1.35 (1.03-1.76)	1.66 (1.22-2.26)	0.002

¹P_trend by entering quartiles of energy adjusted NEAP as a fixed factor and testing the contrast by using the polynomial option in all models;

²Model adjusted for age, sex, BMI, PASE, education level, smoking status, alcohol use, and quartiles of energy adjusted intakes of fiber, calcium, magnesium, potassium and sodium. NEAP: Net endogenous acid production; BMI: Body mass index; PASE: The Physical Activity Scale of the Elderly.