Skip to main content

Table 4 Modification by county characteristics

From: Temperature, ozone, and mortality in urban and non-urban counties in the northeastern United States

 

% Increase in mortality per 10 ppb ozone, adjusted for community characteristic

% Change in ozone effect estimate per IQR1increase in community level variable

% Increase in mortality 90 F vs 70 F, adjusted for community characteristic

% Change in temperature effect estimate per IQR1increase in community level variable

 

Central estimate

95% PI

Central estimate

95% PI

Central estimate

95% PI

Central estimate

95% PI

No modification by county characteristic

0.55

(0.25, 0.86)

-

-

8.44

(7.24, 9.65)

-

-

% Families Poverty

0.64

(0.37, 0.90)

−0.02

(−0.04, −0.01)

8.21

(7.17, 9.26)

1.22

(0.59, 1.85)

Population Density

0.66

(0.36, 0.96)

−0.002

(−0.003,−0.0001)

8.09

(6.94, 9.26)

0.08

(0.01, 0.15)

% Over 65

0.59

(0.31, 0.88)

4.41

(0.75, 8.21)

8.37

(7.20, 9.55)

−51.42

(−88.29, 101.45)

Mean ozone

0.56

(0.25, 0.86)

0.001

(−0.02, 0.02)

8.60

(7.45, 9.76)

−0.71

(−1.51, 0.09)

Mean temperature

0.70

(0.35, 1.05)

−0.04

(−0.10, 0.01)

9.02

(7.66, 10.40)

−1.81

(−3.78, 0.21)

  1. 1IQR = Interquartile Range; IQR for families in poverty = 3.6%, IQR for population density = 891 persons/mile2, IQR for residents over age 65 = 2.9%, IQR for ozone concentration = 2.3 ppb, IQR for temperature = 3.6°F.
  2. All ozone results include adjustment for temperature; temperature results do not include adjustment for ozone. Estimates are based on 4 degrees of freedom/year for temporal trend.