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. Author manuscript; available in PMC: 2007 Nov 11.
Published in final edited form as: J Occup Environ Med. 2007 May;49(5):574–583. doi: 10.1097/JOM.0b013e3180577768

Table 1.

General Characteristics of 21,541 Non-Smoking Farm Women in the Agricultural Health Study (1993–7) by Chronic Bronchitis Status

Chronic Bronchitis* (N=583) Controls (N=20,958)
N % N %
Age (yrs)
 20–39 90 15 6,610 32
 40–49 155 27 5,834 28
 50–59 163 28 4,855 23
 60–69 137 24 2,939 14
 70+ 38 7 720 3
State of Residence
 Iowa 336 58 15,188 72
 North Carolina 247 42 5,770 28
Race
 White 553 97 20,127 98
 Other 18 3 469 2
Education
 High School Grad and Below 276 54 8,408 45
 Beyond High School 233 46 10,460 55
BMI (kg/m2)
 Underweight (14–18.49) 6 1 269 2
 Normal (18.5–24.9) 150 34 7,072 48
 Overweight (25–29.9) 147 34 4,690 32
 Obese (30–58) 134 31 2,634 18
Respiratory Conditions
 Asthma 145 25 796 4
 Emphysema 8 1 30 0
Farm Life and other
 Raised on Farmb 364 63 13,321 64
 Lived/Worked on Farm >40 yrs 289 50 7,921 38
 Farm Size >1000 acres 43 7 2,738 13
 Job off Farm (ever) 515 89 18,305 88
Lifestyle
 Current alcohol use 213 37 10,702 51
 Husband ever smoke 268 48 8,010 39
*

self-report of a doctor’s diagnosis of chronic bronchitis over the age 20

b

lived at least half of life on a farm before 18

Numbers may not add up to totals due to missing data.