Table 1.

Sample means and standard deviations of selected variables for the subjects in the 4 exams in the Framingham offspring study¹

	Exam 1 N = 5120	Exam 2 n = 3861	Exam = 3 n = 3871	Exam 4 n = 4017
Age, y	36.3 ± 10.4
Sex, 0–1 (Female = 1)	0.52 ± 0.50
Height, inches	66.21 ± 3.76
Weight, lb	158.34 ± 34.28	161.73 ± 34.23	165.78 ± 34.84	168.67 ± 35.31
BMI, Kg/m2	25.39 ± 4.42	25.82 ± 4.41	26.28 ± 4.58	26.91 ± 4.74
Systolic blood pressure, mm Hg	121.59 ± 15.96	122.34 ± 16.74	123.64 ± 16.78	129.97 ± 18.42
Diastolic blood pressure, mm Hg	78.32 ± 11.25	79.35 ± 11.08	79.42 ± 9.97	77.71 ± 10.72
HDL, mg/dL	50.52 ± 14.68	48.31 ± 13.46	50.88 ± 14.86	49.48 ± 14.83
LDL, mg/dL	124.86 ± 35.43	130.59 ± 35.19	133.88 ± 36.55	-
Cigarettes smoked per day2, n	13.95 ± 14.74	8.49 ± 13.76	6.83 ± 12.88	5.49 ± 11.55
Physical activity score, n	-	3.91 ± 3.61	-	5.75 ± 4.20
Alcohol index, n	3.71 ± 5.09	3.77 ± 5.29	3.34 ± 4.84	2.85 ± 4.35
Proportion with diabetes	0.016 ± 0.13	0.026 ± 0.16	0.037 ± 0.19	0.051 ± 0.22
Proportion with coronary heart disease	0.013 ± 0.11	0.032 ± 0.18	0.047 ± 0.21	0.065 ± 0.25
Age diabetes diagnosed3, y	52.13 ± 10.20
Age coronary heart disease diagnosed3, y	54.42 ± 8.76

¹Values are means ± standard deviations. ² Only the smokers were included in these calculations. ³ Only the 6.7% of the subjects with diabetes and 9.3% subjects with coronary heart disease were included in these calculations.