TABLE 1.
Select Characteristics of Primary Farm Operators and Prevalence of Current Asthma
| Characteristic | No. in samplea | Estimated primary farm operators
|
Current asthma prevalence
|
|
|---|---|---|---|---|
| No. (in 1,000s) | %b (95% CI) | %b (95% CI) | ||
| Total | 11,210 | 2,181 | 100.0 | 5.1 (4.5–5.6) |
| Age group (years) | ||||
| 16–39 | 626 | 113 | 5.3 (4.7–5.9) | 3.8(1.9–5.6) |
| 40–64 | 6,427 | 1,270 | 59.6 (58.3–60.8) | 5.0 (4.2–5.8) |
| 65–99 | 3,909 | 749 | 35.1 (33.9–36.3) | 5.5 (4.6–6.5) |
| Sex | ||||
| Male | 9,538 | 1.823 | 83.7 (82.8–84.7) | 4.6 (4.1–5.2)c |
| Female | 1,653 | 354 | 16.3(15.3–17.2) | 7.3(5.6–9.1) |
| Marital status | ||||
| Married or living with a partner | 9,264 | 1,802 | 83.5 (82.6–84.5) | 5.0 (4.4–5.7) |
| Widowed, divorced, separated | 1,304 | 266 | 12.4(11.5–13.2) | 5.3 (3.7–6.9) |
| Single, never married | 533 | 89 | 4.1 (3.6–4.6) | 5.3 (2.7–8.0) |
| Smoking status | ||||
| Current smoker | 872 | 200 | 9.4(8.6–10.2) | 6.1 (3.8–8.4) |
| Former smoker | 3,069 | 645 | 30.3(29.1–31.5) | 5.5 (4.5–6.5) |
| Nonsmoker | 6,985 | 1,281 | 60.3(59.0–61.5) | 4.7 (4.1–5.4) |
| Second job | ||||
| Yes | 4,879 | 1,041 | 48.3 (47.0–49.6) | 4.8 (4.0–5.7) |
| No | 6,216 | 1,114 | 51.7(50.4–53.0) | 5.3(4.6–6.1) |
| Regiond | ||||
| North | 2,866 | 142 | 6.5 (—e) | 5.4 (4.4–6.4) |
| Midwest | 2,520 | 796 | 36.5 (—) | 4.3 (3.4–5.2)f |
| South | 2,851 | 916 | 42.0 (—) | 5.2 (4.2–6.2) |
| West | 2,973 | 327 | 15.0 (—) | 6.6 (5.6–7.5) |
| Farm acreage | ||||
| <101 | 5,907 | 1,389 | 63.7 (62.8–64.6) | 5.3(4.5–6.1) |
| 101–999 | 4,368 | 666 | 30.5 (29.6–31.4) | 4.6 (3.8–5.4) |
| ≥ 1,000 | 935 | 126 | 5.8(5.4–6.1) | 5.1 (3.4–6.7) |
| Farm value of sales | ||||
| <$10,000 | 3,451 | 1,201 | 55.0 (53.1–57.0) | 5.3 (4.4–6.2) |
| $10,000–$99,999 | 4,827 | 600 | 27.5 (26.9–28.2) | 5.3 (4.5–6.0) |
| ≥$100,000 | 2,932 | 380 | 17.4(16.8–18.1) | 4.2 (3.3–5.0) |
| Farm typeg | ||||
| Livestock | 5,450 | 1,113 | 51.1 (49.8–52.3) | 5.3(4.5–6.1) |
| Crop | 5,760 | 1,068 | 48.9 (47.7–50.2) | 4.9 (4.1–5.7) |
Note. 95% CI = 95% confidence interval.
Unweighted sample size. Differences between the total number of subjects and the 11,210 participants in the survey resulted from missing data (248 for age, 19 for sex, 109 for marital status, 284 for smoking status, 115 for second job, 280 for current asthma).
Weighted to the national population of primary farm operators using the survey sample weights for each participant.
Males versus females, P = .0009.
North: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont; Midwest: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, and Wisconsin; South: Alabama, Texas, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Virginia, and West Virginia; West: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming.
Farm counts considered a population measure, no confidence interval calculated.
Midwest versus West, P = .001.
Livestock farm type includes swine, dairy, beef cattle, sheep/goats, equine, poultry, aquaculture, and other animal; crop farm type includes grains, tobacco, cotton, vegetables, fruits/nuts, nursery/greenhouse, cut Christmas trees, and other crops/hay.