AHR	Airway hyperreactivity
ATP III	Adult treatment panel III
BDR	Bronchodilator response
BMI	Body mass index
CRP	C-reactive protein
CI	Confidence interval
DBP	Diastolic blood pressure
EMR	Electronic medical record
FDNY	Fire Department of City of New York
FEV1	Forced expiratory volume over 1 second
FVC	Forced vital capacity
HDL	High density lipoprotein
HR	Hazards ratio
LDL	Low density lipoprotein
LLN	Lower limit of normal
MCT	Methacholine test
MetSyn	Metabolic syndrome
NCEP	National Cholesterol Education Program
OAD	Obstructive Airways Disease
PC20	Methacholine dose required to reduce FEV1 by 20%.
PFT	Pulmonary function test
PM	Particulate matter
SBP	Systolic blood pressure
SD	Standard deviation
TNF	Tumor necrosis factor
US	United States
WBC	White blood cell
WHO	World Health Organization
WTC	World Trade Center
WTC-AHR	World Trade Center-airway hyperreactivity
WTC-HP	World Trade Center-health program
WTC-LI	WTC-lung injury