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Table 4 Mutli-variable regression models for total mean time spent inside home for workday/weekday and non-workday/weekend of 1 st and 2 nd survey

From: Positional error and time-activity patterns in near-highway proximity studies: an exposure misclassification analysis

 

Time activity survey 1 (N=652)

Time activity survey 2 (N=169)

 

Workday/weekday

Non- workday/weekend

Workday/weekday

Non- workday/weekend

 

R2= 0.53

R2\= 0.11

R2=0.48

R2=0.16

 

ß

95% CI

ß

95% CI

ß

95% CI

ß

95% CI

Intercept

12.65

(11.13, 14.19)

14.86

(13.18, 16.54)

12.47

(9.18, 15.77)

14.5

(10.32, 18.68)

Age

0.04

(0.02, 0.06)

0.04

(0.01, 0.06)

0.03

(−0.02, 0.08)

0.08

(0.01, 0.14)

Male

−0.40

(−0.88, 0.08)

0.04

(−0.49, 0.57)

−0.35

(−1.46, 0.75)

0.01

(−1.40, 1.41)

Retired, disabled, or unemployed

5.44

(4.84, 6.04)

0.65

(−0.01, 0.06)

4.59

(3.24, 5.93)

−0.35

(−2.06, 1.36)

Education

        

  Less than high school diploma

−1.19

(−2.15, −0.23)

0.18

(−0.88, 1.23)

−0.58

(−2.59, 1.42)

−0.54

(−3.08, 2.01)

  High school diploma

−1.19

(−2.11, −0.27)

0.99

(−0.03, 2.00)

−0.56

(−2.22, 1.11)

0.01

(−2.1, 2.12)

  Undergraduate School

−0.68

(−1.56, 0.20)

1.26

(0.30, 2.23)

−0.89

(−2.43, 0.64)

−1.23

(−3.18, 0.72)

  Graduate School

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Income

        

  Don’t know/ refused

0.90

(−0.19, 1.99)

0.53

(−0.67, 1.73)

0.53

(−1.96, 3.03)

1.6

(−2.48, 3.85)

  Less than $24,999

1.46

(0.58, 2.35)

1.15

(0.18, 2.12)

2.91

(−0.49, 2.64)

1.79

(−0.54, 4.12)

  $25,000 – $74,999

0.33

(−0.48, 1.14)

0.43

(−0.46, 1.32)

1.07

(−0.49, 2.64)

−0.24

(−2.22, 1.75)

  $75,000 or more

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Race

        

  White

−0.78

(−1.63, 0.06)

0.17

(−0.76, 1.10)

−0.61

(−2.42, 1.21)

−0.66

(−2.97, 1.64)

  Black

−1.06

(−2.14, 0.02)

0.83

(−0.36, 2.01)

−0.76

(−2.97, 1.45)

−0.14

(−2.95, 2.67)

  Asian

−0.85

(−1.70, −0.01)

0.87

(−0.05, 1.80)

0.42

(−2.29, 3.13)

3.44

(−0.01, 6.88)

  Other

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Ref

  1. Analysis is restricted to those participants that had complete workday/weekday and non-workday/weekend questionnaires.