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. Author manuscript; available in PMC: 2015 Feb 27.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2009 Apr 8;20(3):237–244. doi: 10.1038/jes.2009.11

Table 4.

Results for separate analyses of rural, urban, and suburban block groups.

Measure Urban Least squares means P-valuea Scale


0–2k > 2k Buffer County
Socioeconomic status
MHI ($1000) Rural 47.9 (45.7–50.0) 46.9 (46.2–47.6) 0.3637 <0.0001
Urban 46.3 (41.0–51.6) 37.6 (35.5–39.8) 0.0005 <0.0001
Suburban 50.4 (47.2–53.6) 49.5 (48.5–50.6) 0.5880 <0.0001
PCI ($1000) Rural 21.4 (20.3–22.5) 21.3 (20.9–21.6) 0.8610 <0.0001
Urban 20.7 (18.2–23.3) 18.8 (17.7–19.9) 0.1108 <0.0001
Suburban 22.5 (20.9–24.1) 22.4 (21.9–23.0) 0.9287 <0.0001
%Povertyb Rural 7.6 (6.6–8.7) 8.2 (7.8–8.6) 0.2355 <0.0001 3.5
Urban 6.7 (4.9–9.2) 14.2 (12.9–15.6) <0.0001 <0.0001 10.4
Suburban 6.8 (5.9–7.9) 7.2 (6.9–7.5) 0.4468 <0.0001 4.6
% High school education Rural 83.3 (81.2–85.4) 83.4 (82.7–84.0) 0.9285 <0.0001 1.7
Urban 85.4 (82.6–88.2) 80.3 (79.1–81.5) <0.0001 <0.0001 3.6
Suburban 84.8 (82.5–87.2) 83.9 (83.1–84.7) 0.4205 <0.0001 2.8
% College education Rural 27.9 (25.7–30.3) 28.6 (28.0–29.3) 0.5603 <0.0001 3.25
Urban 33.3 (30.1–36.7) 30.2 (28.7–31.8) 0.0315 <0.0001 7.3
Suburban 33.0 (30.6–35.6) 33.0 (32.1–34.0) 0.9949 <0.0001 5.0
% Employedc Rural 61.4 (59.2–63.7) 61.3 (60.6–62.0) 0.9402 <0.0001 2.3
Urban 56.9 (54.4–59.6) 55.0 (53.9–56.2) 0.1051 <0.0001 4.4
Suburban 62.0 (59.5–64.6) 60.1 (59.2–60.9) 0.1337 <0.0001 3.8
Demographics
% White Rural 96.1 (93.7–98.6) 96.0 (95.2–96.8) 0.9377 <0.0001 2.3
Urban 97.9 (91.4–100) 86.7 (84.3–89.2) 0.0002 <0.0001 9.0
Suburban 94.1 (92.1–96.2) 93.9 (93.2–94.6) 0.8490 <0.0001 2.8
% <18 years Rural 26.0 (24.9–27.2) 26.3 (26.0–26.7) 0.5716 <0.0001 2.1
Urban 22.3 (20.6–24.1) 23.2 (22.4–24.0) 0.2848 <0.0001 5.4
Suburban 25.7 (24.4–27.0) 24.7 (24.3–25.2) 0.1419 <0.0001 3.4
% >64 years Rural 12.1 (11.1–13.2) 12.4 (12.1–12.8) 0.4926 <0.0001 2.75
Urban 16.3 (14.5–18.3) 15.9 (15.2–16.6) 0.6761 <0.0001 6.5
Suburban 12.5 (11.3–13.7) 13.0 (12.7–13.4) 0.3547 <0.0001 4.3
Housing characteristics
% Owner occupied Rural 84.5 (82.3–86.8) 81.7 (81.2–82.2) 0.0138 <0.0001 1.35
Urban 72.1 (65.8–79.0) 56.0 (53.7–58.4) <0.0001 <0.0001 6.7
Suburban 79.9 (77.2–82.7) 78.9 (78.0–79.8) 0.4689 <0.0001 2.5
Year the house was built Rural 1964 (1961–1967) 1962 (1961–1963) 0.1121 <0.0001
Urban 1959 (1956–1962) 1949 (1948–1951) <0.0001 <0.0001
Suburban 1966 (1964–1968) 1965 (1964–1965) 0.2903 <0.0001
Year moved in Rural 1990 (1989–1990) 1990 (1990–1990) 0.3378 <0.0001
Urban 1990 (1989–1992) 1992 (1992–1992) 0.0024 <0.0001
Suburban 1990 (1990–1991) 1991 (1990–1991) 0.7254 <0.0001
Value of housed Rural 108 (100–116) 111 (109–113) 0.4410 <0.0001
Urban 77.2 (60.5–93.9) 95.1 (87.4–103) 0.0198 <0.0001
Suburban 108 (96.4–120) 114 (110–118) 0.3484 <0.0001
Contract rente Rural 486 (464–508) 478 (471–484) 0.4739 <0.0001
Urban 483 (434–531) 454 (437–471) 0.2171 <0.0001
Suburban 492 (462–522) 490 (480–500) 0.9014 <0.0001
a

P-value based on Type III sum of squares.

b

Based on number of individuals (as opposed to number of families, e.g.).

c

% Employed among the population 16 years and over.

d

Value of houses (thousands of dollars) occupied by the owner.

e

Median contract rent is based on specified renter-occupied housing units paying cash rent.

*

P<0.05 (in bold).