The risk and burden of smoking related heart disease mortality among young people in the United States

Table 1 Characteristics of adults aged 18–44 years by gender in the United States: National Health Interview Survey, 1997-2004

Characteristics^a	Male	Female	Total
	(N^A = 55,200)	(N^A = 66,084)	(N^A = 121,284)
	(N^w = 53,135,392)	(N^w = 53,069,053)	(N^w =106,204,445)
Age (In years)^b	31.8 (31.7–31.9)	31.7 (31.6–31.8)	31.8 (31.7–31.9)
Race
White	81.0	78.6	79.8
Black	11.8	14.2	13.0
Others	7.2	7.2	7.2
Known Hypertension	10.4	9.9	10.1
Known Diabetes	1.8	2.0	1.9
BMI^b,c	26.8 (26.8–26.9)	25.8 (25.7–25.8)	26.3 (25.2–26.3)
Physically active during leisure time	69.9	64.9	67.4
Smoking status
Never	57.5	62.1	59.8
Past	13.7	13.0	13.3
Current	28.9	24.9	26.9
Age first smoked regularly (years)^b,d	17.1 (17.0–17.1)	17.0 (17–17.1)	17.0 (17.0–17.1)
Cigarettes per day^b	15.5 (15.3–15.8)	13.6 (13.4–13.8)	14.6 (14.5–14.8)

Abbreviation: BMI, Body mass index
N^A: Actual N or Actual sample in the data; N^w: Weighted N or weighted/estimated sample after adjustment for sample weights and design effects
^aData represent percentage, except where noted
^bMean (95 % Confidence interval)
^cCalculated as weight in kilograms divided by height in meters squared
^dFor past and current smokers

ISSN: 1617-9625