Table 2a.

Partial regression coefficients (β) and standard errors (SE) for the systolic blood pressure predictor variables in the RIM analyses among men with incident hypertension during follow-up: Aerobics Center Longitudinal Study, 1970–2006.

Variable	Model I			Model II			Model III			Model IV
	β	SE	P	β	SE	P	β	SE	P	β	SE	P
Fixed Effects
Intercept	118.95	0.17	<0.001	114.74	0.27	<0.001	118.67	0.18	<0.001	111.14	0.61	<0.001
Age	0.30	0.007	<0.001	0.26	0.007	<0.001	0.24	0.008	<0.001	0.32	0.008	<0.001
Baseline exam date	0.00015	0.00003	<0.001	0.00011	0.00003	<0.001	0.00014	0.00003	<0.001	0.0002	0.00003	<0.001
Body fat %				0.20	0.01	<0.001	0.16	0.01	<0.001	0.05	0.02	0.0051
Fitness							−0.61	0.03	<0.001	−0.36	0.03	<0.001
Age × Fitness							−0.02	0.003	<0.001	−0.03	0.003	<0.001
Waist circumference										0.14	0.0099	<0.001
Resting heart rate										0.14	0.007	<0.001
Fasting plasma glucose										0.04	0.005	<0.001
Triglycerides										0.006	0.0007	<0.001
Total cholesterol										0.01	0.002	<0.001
Current smoker										−1.58	0.19	<0.001
Heavy drinker										1.77	0.22	<0.001
Parental history of hypertension										1.94	0.16	<0.001
Random Effects
SD intercept (95% CI)	7.79 (7.64, 7.95)			7.73 (7.57, 7.89)			7.81 (7.65, 7.98)			7.62 (7.45,7.79)
SD error (95% CI)	9.35 (9.27, 9.43)			9.25 (9.16, 9.34)			9.19 (9.11, 9.28)			8.83 (8.74, 8.93)

SD intercept: SD of the individual variance of the random part of the model; SD error: standard error of linear mixed model; CI = confidence interval.

Body fat%, waist circumference, and resting heart rate were normalized by fitness.