Table 3.
Factors Independently Associated With Self-Reported Current Asthma Among Survey Respondents (n = 6,846), Behavioral Risk Factor Surveillance System, Montana, 2008
| Factor | ß (SE) | AOR (95% CI)a |
|---|---|---|
| Age, y | ||
| 18-44 | 1 [Reference] | |
| 45-64 | 0.110 (0.075) | 1.0 (0.7-1.3) |
| ≥65 | −0.260 (0.089) | 0.7 (0.5-0.9) |
| Sex | ||
| Female | 1 [Reference] | |
| Male | −0.219 (0.066) | 0.6 (0.5-0.8) |
| Race | ||
| White | −0.224 (0.119) | 0.6 (0.4-1.0) |
| Other | 1 [Reference] | |
| Annual household income, $ | ||
| <25,000 | 0.242 (0.109) | 1.3 (1.0-1.8) |
| 25,999-49,999 | −0.079 (0.111) | 1.0 (0.7-1.3) |
| ≥50,000 | 1 [Reference] | |
| Unknown | −0.118 (0.167) | 0.9 (0.6-1.5) |
| Education, y | ||
| <12 | −0.228 (0.173) | 0.8 (0.4-1.3) |
| 12 | 0.171 (0.113) | 1.1 (0.9-1.5) |
| >12 | 1 [Reference] | |
| Health insurance status | ||
| Has insurance | 1 [Reference] | |
| Has no insurance | −0.179 (0.010) | 0.7 (0.5-1.0) |
| Body mass index, kg/m2 | ||
| <25.0 (not overweight or obese) | 1 [Reference] | |
| 25.0-29.9 (overweight) | −0.053 (0.086) | 1.3 (0.9-1.8) |
| ≥30.0 (obese) | 0.360 (0.086) | 1.9 (1.4-2.7) |
| Geographic designation | ||
| Metropolitanb | 1 [Reference] | |
| Nonmetropolitan adjacentc | 0.042 (0.104) | 1.0 (0.7-1.5) |
| Nonmetropolitan nonadjacentd | −0.041(0.080) | 1.0 (0.7-1.3) |
Abbreviations: SE, standard error; AOR, adjusted odds ratio; CI, confidence interval.
a
Each of the variables in the table was included in the model.
b
Counties in metropolitan areas of fewer than 250,000 people.
c
Nonmetropolitan counties adjacent to a metropolitan area.
d
Nonmetropolitan counties not adjacent to a metropolitan area.