|
Demographic variables
|
|
Age, mean (SD)
|
56.1 (11)
|
55.9 (11.36)#
|
61.9 (10.6)*#
|
58.6 (10.97)
|
56.7 (13.65)
|
|
BMI
|
31.9 (7.42)*#
|
27.7 (5.75)#
|
31.9 (7.85)*#
|
29.5 (7.65)
|
28.2 (7.58)
|
|
Female
|
57%
|
52%
|
58%
|
63%
|
68%
|
|
Born in USA
|
|
Yes
|
53%
|
71%
|
72%
|
57%
|
68%
|
|
Missing
|
10%
|
1%
|
3%
|
2%
|
4%
|
|
Race
|
|
White
|
67%
|
70%
|
65%
|
63%
|
64%
|
|
Non-white
|
30%
|
28%
|
34%
|
37%
|
36%
|
|
Missing
|
3%
|
2%
|
1%
|
0%
|
0%
|
|
Annual household income
|
|
Less than $24,999
|
27%#
|
26%#
|
61%*#
|
35%#
|
28%
|
|
$25,000-$74,999
|
43%#
|
40%#
|
25%#
|
31%
|
25%
|
|
$75,000 or more
|
10%
|
22%#
|
8%*#
|
22%#
|
38%
|
|
Don’t know/ refused
|
20%#
|
12%
|
6%#
|
11%
|
9%
|
|
Terminal degree
|
|
Less than high school
|
27%
|
14%
|
31%
|
24%
|
13%
|
|
High school
|
46%*#
|
33%
|
26%#
|
37%
|
21%
|
|
Undergraduate
|
27%
|
39%*#
|
25%#
|
20%
|
32%
|
|
Graduate
|
0%
|
14%
|
18%
|
19%
|
34%
|
|
Employment
|
|
Working full or part time
|
53%#
|
45%#
|
28%*#
|
43%
|
53%
|
|
Retired, disabled, unemployed
|
37%#
|
52%#
|
69%*#
|
57%
|
45%
|
|
Missing
|
10%
|
3%
|
3%
|
0%
|
2%
|
|
Study area
|
|
Somerville
|
67%#
|
38%*#
|
53%
|
69%*#
|
49%
|
|
Exposure variables
|
|
Workday time spent inside home (hrs)
|
14.6 (5.41)
|
17.1 (4.62)
|
17.4 (4.16)
|
16.7 (5.85)
|
16.8 (4.39)
|
|
Non-workday time spent inside home (hrs)
|
17.2 (5.37)
|
18.5 (4.23)
|
19.5 (4.12)
|
18.7 (5.27)
|
17.7 (5.20)
|
|
Previous week combustion exposure score
|
3.1 (2.35)
|
3.9 (1.92)
|
3.8 (2.03)
|
3.9 (2.38)
|
3.2 (1.98)
|
|
Job combustion score
|
3.27 (1.62)
|
3.21 (1.64)
|
3.70 (1.65)
|
3.20 (1.69)
|
3.17 (1.61)
|
|
Open windows in winter
|
|
Yes
|
59%
|
59%
|
63%
|
52%
|
49%
|
|
Missing
|
3%
|
3%
|
2%
|
0%
|
0%
|
|
Open windows in summer
|
|
Yes
|
96%
|
96%
|
91%
|
91%
|
94%
|
|
Missing
|
3%
|
2%
|
5%
|
0
|
2%
|
|
Travel on highway
|
|
Yes
|
17%#
|
4%*#
|
15%#
|
17%#
|
11%
|
|
Missing
|
3%
|
2%
|
0%
|
0%
|
0%
|
|
Health & medications
|
|
Statin medication
|
13%
|
33%
|
21%
|
33%
|
23%
|
|
Previous heart attack
|
3%
|
5%
|
9%
|
5%
|
6%
|
|
Diabetes
|
13%
|
14%
|
15%
|
15%
|
15%
|
