Table 1.

Demographic and other characteristics of the FDNY study population by sarcoidosis diagnosis

Characteristics	With post-9/11 Sarcoidosis		Without Sarcoidosis
	N	%	N	%
Total	68	100	13,030	100
Race
White	62	91.2	11,626	89.2
Nonwhite	6	8.8	1,404	10.8
Class
Firefighter	66	97.1	11,707	89.8
EMS worker	2	2.9	1,323	10.2
Age at diagnosis – years
Median [IQR range]	43.2 [38.3–47.2]		N/A
Age at 9/11 – years
Median [IQR range]	37.4 [33.7 – 40.1]		40 [33.8–46.0]
WTC Arrival Group
Arrival morning of 9/11	14	20.6	2,073	15.9
Arrival afternoon of 9/11	30	44.1	6,280	48.2
Arrival on 9/12/2001	17	25.0	2,453	18.8
Arrival any day between 9/13/2001 and 9/24/2001	7	10.3	2,224	17.1
WTC Work duration – months
Median [IQR range]	4.0 [2.0– 6.5]		3.0 [1.0–5.0]
Current smoking status
Never smoker	49	72.1	7,586	58.2
Ever smoker	19	27.9	5,444	41.8
Biopsy-confirmed	63	92.7	N/A	N/A
Intra-thoracic involvement of sarcoidosisa	67	98.5	N/A	N/A
Symptomatic of intrathoracic involvement at time of diagnosisb	36	53.7	N/A	N/A

^aN=1 case had isolated uveitis

^bPercentage of N=67 sarcoidosis cases with intra-thoracic involvement

Abbreviations: FDNY, Fire Department of the City of New York; WTC, World Trade Center