. Author manuscript; available in PMC: 2013 Jun 15.

Published in final edited form as: J Toxicol Environ Health A. 2012 Jun 15;75(12):673–683. doi: 10.1080/15287394.2012.688485

Table 1.

Characteristics of 63 ET cases vs. 70 controls

Characteristic	ET Cases (N = 63)	Controls (N = 70)	Significance
Age in years	71.7 ± 11.6	70.0 ± 10.0	t = 0.89, p = 0.38
Female gender	31 (49.2)	43 (61.4)	Χ² = 2.01, p = 0.16
Non-Hispanic white race	59 (93.7)	63 (90.0)	Χ² = 0.58, p = 0.45
Years of education	15.8 ± 2.4	16.3 ± 2.2	t = 1.11, p = 0.27
Body mass index in kg/m²	25.1 ± 4.3	25.9 ± 4.7	t = 1.02, p = 0.31
Current cigarette smoker	4 (6.3)	5 (7.1)	Fisher’s Exact Test p = 1.00
Pack-years (among current cigarette smokers)	12.0 ± 8.5	35.6 ± 17.3	t = 1.77, p = 0.14
Ever cigarette smoker	34 (54.0)	35 (50.0)	Χ² = 0.21, p = 0.65
Pack-years (among ever cigarette smokers)	14.5 ± 16.5	22.6 ± 23.7	t = 1.61, p = 0.11
Number of cigarettes smoked on the day of the evaluation	0.08 ± 0.50	0.09 ± 0.50	t = 0.09, p = 0.93
Answered “yes” to the question “have you had something to eat today”.	39 (67.2)	53 (76.8)	Χ² = 1.45, p = 0.23
Answered “yes” to the question “have you had something to drink today”.	32 (50.8)	46 (65.7)	Χ² = 3.04, p = 0.08
Cumulative Illness Rating Scale score	7.1 ± 3.1	6.2 ± 3.7	t = 1.44, p = 0.15

Values are mean ± standard deviation, or numbers (percentages).