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Table 3 Overall and RUCC-stratified domain variable means, standard deviations, ranges for select variables in the land domain

From: Construction of an environmental quality index for public health research

  

Metropolitan - urbanized

Non-metro urbanized

Less-urbanized

Thinly populated

Overall

  

(RUCC1 = 1089)

(RUCC2 = 323)

(RUCC 3 = 1059)

(RUCC4 = 670)

(n = 3141)

Variable (construct)

Units

Mean (sd) [range]

Mean (sd) [range]

Mean (sd) [range]

Mean (sd) [range]

Mean (sd) [range]

Harvested acreage

acres harvested per county acres

0.183 (0.208)

0.240 (0.244)

0.240 (0.253)

0.201 (0.218)

0.212 (0.231)

(Agriculture)

[0, 0.920]

[0, 0.895]

[0, 1.221]

[0, 0.946]

[0, 1.221]

Animal units

animal units per county acres

0.151 (0.727)

0.079 (0.116)

0.174 (1.639)

0.103 (0.143)

0.141 (1.047)

(Agriculture)

[0, 20.984]

[0, 1.235]

[0, 46.941]

[0, 1.481]

[0, 46.941]

Herbicides

pounds applied

6.85E + 04 (1.28E + 05)

1.08E + 05 (1.66E + 05)

9.56E + 04 (1.52E + 05)

6.81E + 04 (1.08E + 05)

8.16E + 04 (1.38E + 05)

(Pesticides)

[0, 1.18E + 06]

[0, 1.08E + 06]

[0, 1.15E + 06]

[0, 7.16E + 05]

[0, 1.18E + 06]

Insecticides

pounds applied

3.69E + 03 (8.89E + 03)

6.14E + 03 (1.36E + 04)

5.11E + 03 (1.05E + 04)

2.75E + 03 (5.33E + 03)

4.22E + 03 (9.52E + 03)

(Pesticides)

[0, 1.72E + 05]

[0, 1.89E + 05]

[0, 1.53E + 05]

[0, 4.87E + 04]

[0, 1.89E + 05]

Arsenic

ppm

6.530 (5.445)

6.850 (8.171)

6.435 (5.139)

6.342 (4.304)

6.491 (5.476)

(Contaminants)

[0, 91.333]

[0, 131.369]

[0, 98.893]

[0, 43.595]

[0, 131.369]

Lead

ppm

29.901 (45.950)

22.049 (17.221)

21.219 (24.976)

22.812 (51.740)

24.654 (39.465)

(Contaminants)

[0, 1007.300]

[0, 196.867]

[0, 691.838]

[0, 1123.110]

[0, 1123.110]

Titanium

% weight

0.404 (0.228)

0.369 (0.185)

0.327 (0.165)

0.318 (0.185)

0.356 (0.198)

(Contaminants)

[0, 2.118]

[0, 1.405]

[0, 2.109]

[0, 1.941]

[0, 2.118]

Iron

% weight

2.531 (1.480)

2.372 (1.282)

2.152 (1.186)

2.154 (1.054)

2.307 (1.292)

(Contaminants)

[0, 13.731]

[0, 8.440]

[0, 9.461]

[0, 7.165]

[0, 13.731]

Phosphorus

% weight

0.067 (0.139)

0.056 (0.095)

0.051 (0.059)

0.053 (0.040)

0.057 (0.096)

(Contaminants)

[0, 2.203]

[0, 1.296]

[0, 1.025]

[0, 0.509]

[0, 2.203]

Facilities

facilities per county pop

3.94E-04 (2.77E-04)

4.95E-04 (3.08E-04)

5.59E-04 (4.60E-04)

7.77E-04 (2.33E-03)

5.42E-04 (1.13E-03)

(facilities)

[0, 2.30E-03]

[4.23E-05, 2.19E-03]

[0, 7.55E-03]

[0, 5.42E-02]

[0, 5.42E-02]

Radon zone

radon zone

2.010 (0.815)

2.000 (0.856)

2.022 (0.834)

1.849 (0.809)

1.979 (0.827)

(Radon)

 

[0, 3.000]

[0, 3.000]

[0, 3.000]

[0, 3.000]

[0, 3.000]

  1. Complete list of variables is available in Additional file 2.
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Environmental Health

ISSN: 1476-069X