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Table 1 Demographic and medical/asthma characteristics presented as a function of high versus low SES

From: Individual-level socioeconomic status is associated with worse asthma morbidity in patients with asthma

  Low (< 12 yrs education)
n = 306
High (≥ 12 yrs education)
n = 475
  
  Mean or % 95% CI Mean or % 95% CI F p
Demographics       
   Age (yrs)* 52.3 50.8, 53.9 46.0 44.8, 47.3 37.42 < .001
   Sex (% Male) 40 35, 46 40 36, 45 0.00 .997
   Ethnicity (% Caucasian) 91 88, 94 92 90, 95 0.44 .518
   Cohabitating (% yes) 68 62, 73 65 61, 70 0.47 .492
   Employed (% yes) 49 43, 54 72 68, 76 45.73 < .001
Medical characteristics       
   BMI (kg/m2)* 27.8 27.3, 28.4 26.6 26.1, 27.0 12.32 < .001
   Current smoker (% yes) 13 9, 16 8 5, 10 5.75 .017
   Pack-years†* 12.9 10.9, 14.9 6.6 5.0, 8.1 23.84 < .001
   Psychiatric comorbidity (% yes)¶ 32 27, 37 27 23, 32 2.02 .156
Asthma characteristics       
   FEV1 (% predicted)* 77.3 74.6, 79.9 79.9 77.8, 82.0 2.32 .129
   FVC (% predicted)* 87.8 85.3, 90.2 90.5 88.6, 92.4 3.03 .082
   FEV1/FVC* 71.4 69.6, 73.2 72.9 71.6, 74.3 1.78 .183
   Asthma severity (% moderate or severe) 92 88, 96 84 80, 87 10.94 .001
   Asthma duration (yrs)* 18.2 16.5, 19.9 18.9 17.5, 20.3 0.45 .502
   Atopic (% yes) 62 57, 67 77 73, 81 23.01 < .001
   Bronchodilator use (# times in last week)* 9.6 7.9, 11.3 7.0 5.6, 8.3 5.77 .017
  1. FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity; BMI = body mass index;
  2. * These values are reported as means
  3. † pack-years = average number of packs (20 cigarettes/pack) smoked per day X number of years smoked;
  4. ¶ Mood and-or anxiety disorder