Air Pollution from Industrial Swine Operations and Blood Pressure of Neighboring Residents

http://dx.doi.org/10.1289/ehp.1205109



Table 2. Distributions of odor, H2S, and BP from the total of nonmissing records (N = 2,949), Community Health Effects of Industrial Hog Operations
study.
Variable (scale) (%)
aPercent of all records.
Odor (0–8)Missinga 177 (6.0)
None 1,419 (48.1)
1–2 779 (26.4)
3–5 407 (13.8)
6–8 167 (5.7)
Stress (0–8)Missinga 58 (2.0)
None 2,331 (80.6)
1–2 436 (15.1)
3–5 91 (3.2)
6–8 33 (1.2)
H2S (ppb)Missinga 255 (8.6)
0 2,412 89.5
0–2 170 (6.3)
2–4.99 77 (2.9)
5–47.5 35 (1.3)
PM10 (µg/m3)Missinga 948 (32.1)
< 10 415 (20.7)
10–19.9 783 (39.1)
20–29.9 528 (26.4)
30–502.0 275 (13.7)
Semivolatile PM10 (µg/m3)Missinga 948 (32.2)
< 0 366 (18.3)
0–2.99 638 (31.9)
3–7.99 767 (38.3)
> 8 230 (11.5)
SBP (mmHg)Missinga 41 (1.4)
< 120 897 (30.8)
120–139 1,257 (43.2)
140–159 510 (17.5)
> 160 244 (8.4)
DBP (mmHg)Missinga 41 (1.4)
< 80 1,804 (62.0)
80–89 781 (26.9)
90–99 221 (7.6)
> 100 102 (3.5)