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. Author manuscript; available in PMC: 2022 Sep 8.
Published in final edited form as: Lancet. 2011 Sep 3;378(9794):888–897. doi: 10.1016/S0140-6736(11)61180-X

Table 2:

Cumulative incidence before and after 9/11 of physical disorders, mental health symptoms, and spirometric abnormalities in the World Trade Center Screening, Monitoring, and Treatment Program study population

Pre-exposure Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9
Physical health
 Asthma 10·5% (24 985) 13·7% (22 360) 15·8% (21 496) 17·5% (19 505) 19·3% (18 227) 21·1% (16 897) 23·4% (15 317) 25·0% (12 809) 26·4% (10 744) 27·6% (7027)
 Sinusitis 10·7% (25 041) 18·0% (22 357) 21·8% (20 476) 25·2% (18 238) 28·3% (16 709) 31·2% (15 204) 34·4% (13 537) 37·3% (11 100) 39·8% (9109) 42·3% (5870)
 Gastro-oesophageal reflux disease 5·8% (25 539) 10·7% (24 055) 14·4% (22 741) 17·9% (20 343) 21·5% (18 603) 25·4% (16 828) 29·9% (14 796) 33·6% (11 896) 37·1% (9423) 39·3% (5650)
Mental health symptoms
 New York City police
  Depression ·· 1·7% (9573) 2·0% (9467) 2·3% (8734) 3·7% (8026) 3·7% (7510) 4·2% (6999) 4·2% (6097) 6·2% (5420) 7·0% (3648)
  PTSD ·· 2·5% (9866) 2·5% (9679) 4·0% (9124) 4·6% (8624) 5·7% (8155) 6·3% (7597) 7·4% (6537) 8·4% (5601) 9·3% (3761)
  Panic disorder ·· 2·3% (9820) 2·6% (9691) 3·1% (8928) 4·4% (8186) 4·4% (7659) 5·6% (7158) 5·7% (6271) 7·0% (5591) 8·4% (3780)
 Other rescue and recovery workers*
  Depression ·· 10·8% (15 062) 12·7% (14 105) 15·3% (11 620) 17·0% (9855) 17·4% (8847) 19·0% (8205) 22·3% (7138) 24·6% (6229) 27·5% (4200)
  PTSD ·· 12·8% (16 054) 13·5% (14 641) 17·1% (12 306) 19·8% (10 762) 22·6% (9785) 24·2% (8956) 27·2% (7682) 29·7% (6473) 31·9% (4342)
  Panic disorder ·· 5·0% (15 995) 5·7% (15 302) 8·1% (12 880) 12·8% (10 964) 12·8% (10 083) 13·7% (9446) 14·2% (8302) 18·5% (7349) 21·2% (4953)
Abnormal spirometry ·· 23·7% (24 566) 24·9% (22 174) 27·1% (19 105) 28·5% (16 542) 29·1% (14 378) 32·4% (12 700) 34·9% (10 883) 37·9% (8949) 41·8% (5769)

Data are % (number at risk). Number of individuals at risk is estimated from cumulative incidence curves. PTSD=post-traumatic stress disorder.

*

All workers except New York City police officers.