|
Characteristic
|
N (%)
|
Unadjusted coefficient (95%CI) for ppm rise in CO
|
Adjusted2 coefficient (95%CI) for ppm rise in CO
|
|---|
|
Duration of session
|
29.6 (10.1)1
|
15.8 (11.0–20.6)3
|
14.8 (9.3–20.3)3
|
|
Age of participant in years
|
22.8 (4.3)1
|
1.8 (0.4–3.2)4
|
-0.1 (-1.4–1.2)4
|
|
Ethnic group
| | | |
|
White and others
|
43 (68.3)
|
Reference
|
Reference
|
|
Asian
|
28 (44.4)
|
-15.5 (-29.4–1.7)
|
-5.6 (-18.4–7.2)
|
|
Arab
|
15 (23.8)
|
3.7 (-12.5–19.9)
|
-1.9 (-15.3–11.5)
|
|
Gender
| | | |
|
Male
|
49 (77.8)
|
15.9 (5.1–26.6)
|
6.4 (-6.9–19.6)
|
|
Female
|
14 (22.2)
|
Reference
|
Reference
|
-
1 Mean (SD).
-
2 Adjusted for all variables in table.
-
3 For a 10 minute increase in duration.
-
4 For a 1 year increase in age.
