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              [html]<thead><tr><td>TABLE 1</td><td>Descriptive Characteristics and Demographics of the Study Group</td><td>Descriptive Characteristic</td><td>Control Group ( n = 231 )</td><td>Normal Spirometry Group ( n = 2.090 )</td><td>Asthma Group ( n = 265 )</td></tr></thead><tbody><tr><td>COPD Group ( n = 330 )</td><td>PRISm Group ( n = 172 )</td><td>Age, y</td><td>61.5 ( 14.6 )</td><td>59.2 ( 15.3 )</td><td>58.7 ( 16.0 )</td></tr><tr><td>66.1 ( 11.3 )</td><td>60.9 ( 14.4 )</td><td>Female, No. (%)</td><td>98 ( 42 )</td><td>1082 ( 52 )</td><td>116 ( 44 )</td></tr><tr><td>121 ( 37 )</td><td>86 ( 50 )</td><td>Income, No. (%)</td><td>< CAD $ 30.000</td><td>10 ( 4.5 )</td><td>209 ( 10 )</td></tr><tr><td>18 ( 7 )</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>51 ( 15 )</td><td>34 ( 20 )</td><td>≥ CAD $ 30.000</td><td>211 ( 91 )</td><td>1522 ( 73 )</td><td>204 ( 77 )</td></tr><tr><td>213 ( 65 )</td><td>106 ( 62 )</td><td>Income not reported</td><td>10 ( 4.5 )</td><td>359 ( 17 )</td><td>43 ( 16 )</td></tr><tr><td>66 ( 20 )</td><td>32 ( 18 )</td><td>BMI, kg / m2</td><td>28.35 ( 5.39 )</td><td>30.50 ( 6.60 )</td><td>30.65 ( 7.03 )</td></tr><tr><td>28.57 ( 5.86 )</td><td>34.66 ( 8.80 )</td><td>BMI, No. (%)</td><td>Not overweight</td><td>68 ( 29 )</td><td>422 ( 20 )</td></tr><tr><td>60 ( 23 )</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>98 ( 30 )</td><td>20 ( 12 )</td><td>Overweight</td><td>86 ( 37 )</td><td>675 ( 32 )</td><td>72 ( 27 )</td></tr><tr><td>127 ( 38 )</td><td>37 ( 21 )</td><td>Obese</td><td>71 ( 31 )</td><td>812 ( 39 )</td><td>104 ( 39 )</td></tr><tr><td>91 ( 28 )</td><td>77 ( 45 )</td><td>Morbidly obese</td><td>6 ( 3 )</td><td>181 ( 9 )</td><td>29 ( 11 )</td></tr><tr><td>14 ( 4 )</td><td>38 ( 22 )</td><td>Prebronchodilator spirometry</td><td>FEV1, L</td><td>2.98 ( 0.76 )</td><td>2.89 ( 0.81 )</td></tr><tr><td>2.53 ( 0.78 )</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2.01 ( 0.71 )</td><td>2.06 ( 0.56 )</td><td>FEV1, % predicted</td><td>102.5 ( 15.0 )</td><td>99.6 ( 14.0 )</td><td>83.7 ( 13.6 )</td></tr><tr><td>70.3 ( 17.0 )</td><td>70.7 ( 7.7 )</td><td>FEV1 / FVC</td><td>0.74 ( 0.07 )</td><td>0.76 ( 0.06 )</td><td>0.69 ( 0.07 )</td></tr><tr><td>0.58 ( 0.08 )</td><td>0.77 ( 0.06 )</td><td>Post - bronchodilator spirometry</td><td>FEV1, L</td><td>3.01 ( 0.8 )</td><td>2.98 ( 0.84 )</td></tr><tr><td>2.89 ( 0.86 )</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2.16 ( 0.71 )</td><td>2.09 ( 0.57 )</td><td>FEV1 % predicted</td><td>105.9 ( 14.6 )</td><td>102.6 ( 14.0 )</td><td>95.6 ( 14.4 )</td></tr><tr><td>75.5 ( 16.0 )</td><td>71.6 ( 7.3 )</td><td>FEV1 / FVC</td><td>0.77 ( 0.07 )</td><td>0.79 ( 0.06 )</td><td>0.74 ( 0.06 )</td></tr><tr><td>0.60 ( 0.09 )</td><td>0.78 ( 0.06 )</td><td>Change in FEV1 postbronchodilator,</td><td>3.4 ( 4.7 )</td><td>3.0 ( 3.7 )</td><td>11.9 ( 3.9 )</td></tr><tr><td>5.0 ( 5.4 )</td><td>0.9 ( 3.9 )</td><td>Comorbidities, No. (%)</td><td>Congestive heart failure</td><td>1 ( 0.4 )</td><td>22 ( 1 )</td></tr><tr><td>5 ( 2 )</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>10 ( 3 )</td><td>9 ( 5 )</td><td>Coronary artery disease</td><td>24 ( 10 )</td><td>180 ( 9 )</td><td>24 ( 9 )</td></tr><tr><td>64 ( 19 )</td><td>31 ( 18 )</td><td>Depression / anxiety</td><td>70 ( 30 )</td><td>836 ( 40 )</td><td>106 ( 40 )</td></tr><tr><td>99 ( 30 )</td><td>54 ( 31 )</td><td>Diabetes mellitus</td><td>23 ( 10 )</td><td>261 ( 12 )</td><td>33 ( 12 )</td></tr><tr><td>42 ( 13 )</td><td>45 ( 26 )</td><td>Hypertension</td><td>66 ( 29 )</td><td>704 ( 34 )</td><td>94 ( 35 )</td></tr><tr><td>122 ( 37 )</td><td>86 ( 50 )</td><td>Anemia</td><td>31 ( 13 )</td><td>351 ( 17 )</td><td>44 ( 17 )</td></tr><tr><td>42 ( 13 )</td><td>23 ( 13 )</td><td>Cancer</td><td>23 ( 10 )</td><td>222 ( 11 )</td><td>25 ( 9 )</td></tr><tr><td>51 ( 15 )</td><td>13 ( 8 )</td><td>GERD</td><td>55 ( 24 )</td><td>735 ( 35 )</td><td>89 ( 34 )</td></tr><tr><td>98 ( 30 )</td><td>63 ( 37 )</td><td>Liver disease</td><td>6 ( 3 )</td><td>89 ( 4 )</td><td>12 ( 5 )</td></tr><tr><td>14 ( 4 )</td><td>9 ( 5 )</td><td>Renal disease</td><td>10 ( 4 )</td><td>85 ( 4 )</td><td>9 ( 3 )</td></tr><tr><td>20 ( 6 )</td><td>10 ( 6 )</td><td>Stroke</td><td>5 ( 2 )</td><td>72 ( 3 )</td><td>5 ( 2 )</td></tr><tr><td>15 ( 5 )</td><td>11 ( 6 )</td><td>Smoking status, No. (%)</td><td>Does not smoke</td><td>149 ( 65 )</td><td>912 ( 44 )</td></tr><tr><td>104 ( 39 )</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>44 ( 13 )</td><td>72 ( 42 )</td><td>Previous tobacco use</td><td>77 ( 33 )</td><td>839 ( 40 )</td><td>118 ( 45 )</td></tr><tr><td>158 ( 48 )</td><td>68 ( 40 )</td><td>Active tobacco use</td><td>4 ( 2 )</td><td>324 ( 16 )</td><td>41 ( 16 )</td></tr><tr><td>128 ( 39 )</td><td>29 ( 17 )</td><td>Total pack - γ</td><td>5.6 ( 11.8 )</td><td>10.7 ( 16.5 )</td><td>12.7 ( 17.9 )</td></tr><tr><td>32.7 ( 27.2 )</td><td>13.3 ( 19.6 )</td><td>Total months of occupational exposure3</td><td>36.5 ( 112.5 )</td><td>74.7 ( 193.1 )</td><td>101.1 ( 278.9 )</td></tr><tr><td>119.5 ( 262.4 )</td><td>99.3 ( 263.2 )</td></tr></tbody>
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