Table 7.
Stepwise Multiple Regression Results For The 12 Small Indigenous Target Communities' Demography With Regard To The Effects Of Age, BMI, Percentage Of Smokers, Past Smokers/Current Smokers Ratio And Fire Frequency On COPD
| Statistics | Multiple Regression | Age (Average) | BMI (Average) | Smokers (%) Current And Past | Past Smokers/Current Smokers | Fire Frequency (Average) | Overall Regression Statistics | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AIC | F | p | F | p | F | p | F | p | F | p | ||
| Spirometry results FEV1/FVC <0.7 | −144.2 | 0.38 | 0.55 | 0.77 | 0.40 | 9.37 | <0.05 | 0.28 | 0.61 | 1.47 | 0.25 | R2=0.46, F1,11=9.37, p<0.05 |
| Bronchiectasis (%) | −34.25 | 2.79 | 0.13 | 3.14 | 0.11 | 0.05 | 0.83 | 0.43 | 0.53 | 0.73 | 0.42 | R2=0.75, F1,11=3.65, p=0.07 |
| Asthma (%) | −148.45 | 6.57 | <0.05 | 0.00 | 0.82 | 54.94 | <0.05 | 0.10 | 0.76 | 0.05 | 0.82 | R2=0.86, F2,10=29.56, p<0.05 |
| Number of exacerbations (average) | −27.15 | 0.48 | 0.51 | 0.25 | 0.63 | 0.26 | 0.62 | 4.29 | 0.07 | 5.73 | <0.05 | R2=0.48, F1,11=4.60, p<0.05 |
| Number of admissions (average) | −33.99 | 4.05 | 0.07 | 0.39 | 0.55 | 0.10 | 0.76 | 0.01 | 0.93 | 1.50 | 0.25 | R2=0.27, F1,11=4.05, p=0.07 |
Note: Bold text indicates significance.
Abbreviations: BMI, body mass index; COPD, chronic obstructive pulmonary disease; AIC, Akaike Information Criterion; FEV1, forced expiratory volume in one second; FVC, forced vital capacity.