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Table 1 Housing Characteristics of Study Homes

From: Airborne cow allergen, ammonia and particulate matter at homes vary with distance to industrial scale dairy operations: an exposure assessment

Characteristics Total (N = 40)
mean ± SD (range)
Proximal (N = 20)
mean ± SD (range)
Distal (N = 13)
mean ± SD (range)
Intermediate (N = 7)
mean ± SD (range)
Distance to facility (miles)* 3.42 ± 3.99 (0.4 - 11.5) 0.17 ± 0.61 (0.04 - 0.3) 8.65 ± 2.1 (5 - 12) 3.01 ± 0.28 (2.45 - 3.4)
# of people living in house 3.7 ± 1.88 (1 - 8) 3.3 ± 1.6 (1 - 6) 4 ± 2.2 (1 - 8) 4 ± 2.2 (2 - 8)
Age of house (years) 57 ± 31 (3 - 109) 45 ± 46 (5 - 107) 64 ± (3 - 99) 79 ± 22 (57 - 109)
  Total (N = 40)
n (%)
Proximal (N = 20)
n (%)
Distal (N = 13)
n (%)
Intermediate (N = 7)
n (%)
Dog (outside house) 27 (68) 14 (70) 8 (63) 4 (57)
Dog (inside house) 18 (45) 9 (45) 7 (54) 1 (14)
Cat (outside house) 12 (30) 8 (38) 3 (19) 3 (43)
Cat (inside house) 8 (20) 5 (25) 2 (13) 3 (43)
Other (chicken, horse, goat) 6 (15) 5 (25) 0 (0) 1 (14)
Live adjacent to sprayfield 15 (38) 15 (75) 0 (0) 0 (0)
Any air conditioning 28 (70) 11 (55) 10 (77) 7 (100)
  1. *measured using Google Earth.