Table 3 Predictors of diagnosed angina/heart attack and asthma for those directly exposed ^a, including area workers stratified by whether they returned or did not return to work, and passersby^a, South of Chambers Street before December 31, 2001, World Trade Center Health Registry, 2003–2012

Number of Events

57

190

21

66

11

26

 0

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 1

2.1 (0.9, 4.8)

1.7 (1.1, 2.6)

1.2 (0.3, 4.4)

0.5 (0.2, 1.1)

8.1 (2.0, 33.0)

1.8 (0.5, 6.2)

 2

2.8 (0.7, 11.9)

0.6 (0.1, 2.3)

2.7 (0.5, 13.2)

1.4 (0.5, 4.0)

0.0

0.0

 3+

18.3 (4.1, 82.2)

2.9 (0.7, 11.8)

9.0 (0.98, 83.5)

0.0

0.0

0.0

 Intense

0.8 (0.4, 1.3)

1.1 (0.8, 1.5)

1.1 (0.4, 2.9)

2.0 (1.2, 3.3)

0.9 (0.2, 3.3)

0.8 (0.3, 1.9)

 Some/None

Ref

Ref

Ref

Ref

Ref.

Ref.

 Yes

0.9 (0.4, 2.0)

1.1 (0.8, 1.7)

0.9 (0.3, 3.2)

0.8 (0.4, 1.6)

1.3 (0.3, 6.4)

0.9 (0.3, 3.1)

 No

Ref

Ref

Ref

Ref

Ref.

Ref.