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Table 1 Characteristics of current and previous asthmatics and subjects with respiratory symptoms but no asthma

From: The impact of allergic rhinitis on the management of asthma in a working population

  Current asthmatics Previous asthmatics Subjects with respiratory symptoms but no asthma  
  N = 374 N = 426   N = 2302  
  n % n % n % P value
Sex        ns
 Men 218 58.3 269 63.1 1307 56.8  
 Women 156 41.7 157 36.9 995 43.2  
Age        <0.001
  < 25 years 64 17.1 56 13.1 199 8.7  
 25–34 years 98 26.2 137 32.2 558 24.2  
 35–44 years 105 28.1 115 27.0 682 29.6  
 45–54 years 83 22.2 93 21.8 650 28.2  
  > 55 years 24 6.4 25 5.9 213 9.3  
Smoking habits        ns
 Never 146 39.4 145 34.1 759 33.0  
 Past 81 21.8 107 25.2 559 24.4  
 Current 144 38.8 173 40.7 977 42.6  
Body Mass Index (kg/m2)        <0.001
 Underweight (<18.5) 23 6.5 10 2.5 72 3.2  
 Normal (18.5–25) 179 50.8 237 58.4 1221 55.2  
 Overweight (25–30) 110 31.2 127 31.3 664 30.0  
 Obese (>30) 40 11.4 32 7.9 255 11.5  
Hospitalization during the last 12 months 64 17.2 43 10.1 68 2.9 <0.001
Emergency visits during the last 12 months 71 19.0 21 4.9 74 3.2 <0.001
Occupational categories        ns
 Managers 34 10.6 52 12.3 236 10.4  
 Intermediate and supervisory 85 23.1 121 28.7 578 25.6  
 Office and sales personnel 112 30.4 109 25.9 688 30.5  
 Skilled laborers 75 20.4 77 18.3 501 22.2  
 Unskilled laborers 57 15.5 62 14.7 256 11.3  
Industries        ns
 Agriculture 3 0.8 3 0.7 33 1.4  
 Manufacturing industries 70 18.9 89 21.0 515 22.5  
 Construction industry 37 10.0 43 10.1 172 7.5  
 Trade 50 13.5 55 13.0 310 13.6  
 Transportation 13 3.5 13 3.1 64 2.8  
 Personal service activities 15 4.0 21 5.0 104 4.5  
 Real estate, business activities 66 17.8 85 20.0 399 17.4  
 Finance 13 3.5 19 4.5 69 3.0  
 Education, health, social 59 15.9 51 12.0 349 15.3  
 Administration 44 11.9 45 10.6 271 11.8