. Author manuscript; available in PMC: 2015 Feb 23.

Published in final edited form as: J Mol Biomark Diagn. 2014 Mar 21;5:1000174. doi: 10.4172/2155-9929.1000174

Table 1.

Demographics.

		Controls	NAFLD Cases	P-value^*
Number of Subjects		102	29
Age at 9/11^†		42 (37-46)	37 (35-45)	0.030
Years of Service at 9/11^†		14 (8-19)	11 (5-16)	0.050
Race^‡	Caucasian	96 (94)	29 (100)	0.215
Race^‡	African American	6 (6)	0 (0)	0.215
Intensity of WTC Exposure^‡	High^§	29 (28)	7 (24)	0.420
Intensity of WTC Exposure^‡	Intermediate^¶	73 (72)	22 (76)	0.420
BMI, kg/m² ^†		28 (26-30)	30 (28-33)	<0.001
Systolic Blood Pressure, mmHg^†		114 (110-126)	118 (110-127)	0.519
Diastolic Blood Pressure, mmHg^†		72 (70-80)	72 (70-80)	0.277
Time to^†	Serum Collection, months	2.6 (2.1-3.2)	2.8 (2.0-3.8)	0.677
Time to^†	Chest CT scan, months	61 (31-73)	68 (49-81)	0.032
Spirometry^†	FEV₁, % Predicted	94 (85-104)	81 (72-92)	0.001
Spirometry^†	FEV₁/FVC, %	85 (81-88)	83 (81-86)	0.067

Definition of abbreviations: BMI = body mass index; WTC = World Trade Center; FEV₁ = forced expiratory volume in 1 second; FVC = forced vital capacity

^†

Values Expressed as Median (IQR).

^‡

Values Expressed as N (%).

^§

Arrival at WTC 9/11 Morning,

^¶

Arrival at WTC between noon of 9/11 and midnight of 9/12.

Significance assessed by Wilkoxon Rank Sum test or Chi-squared test.