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Table 1 Characteristics of patients with asthma by age group

From: Is asthma in the elderly different? Functional and clinical characteristics of asthma in individuals aged 65 years and older

Variable Group A: < 65 years
N = 1240 (72.5%)
Group B: 65–74 years
N = 282 (16.5%)
Group C: ≥75 years
N = 189 (11%)
p
Sex (% women)a 67.8% 68.8% 72.9% 0.397
Active smokersa 13.7% (N = 163/1185) 3.7% (N = 10/272) 0.5% (N = 1/186) <0.001
Ex-smokersa 23.8% (N = 282/1185) 21.3% (N = 58/272) 17.7% (N = 33/186) <0.001
Obesea (BMI > 30 kg/cm2) 25.5% (N = 299/1171) 45.8% (N = 125/273) 44.3% (N = 82/185) <0.001
Diagnosed with difficult-to-control asthmaa 15.3% (N = 190/1240) 14.2% (N = 40/282) 7.9% (N = 15/189) 0.027
FEV1 < 50%a 7.0% (N = 74/1064) 13.7% (N = 34/249) 16.7% (N = 28/163) <0.001
FEV1 < 50% 54.4% (N = 74/136) 25% (N = 34/136) 20.6% (N = 28/136) <0.001
FeNO > 30 ppb 89.9% (N = 160/178) 8.4% (N = 15/178) 1.7% (N = 3/178) <0.001
Received ≥2 corticosteroid cycles in the previous year 70.9% (N = 310/437) 19.7% (N = 86/437) 9.4% (N = 41/437) 0.106
Treated with high doses of inhaled corticosteroidsb 60.8% (N = 236/388) 20.9% (N = 81/388) 18.3% (N = 71/388) 0.045
Treated with antileukotriene agents 33% (N = 387/1173) 42.9% (N = 115/268) 27.8% (N = 52/187) 0.001
Treated with omalizumab 76.4% (N = 304/398) 18.1% (N = 72/398) 5.5% (N = 22/398) 0.288
  1. Abbreviations: BMI body mass index, FeNO fraction of exhaled of nitric oxide, FEV1 forced expiratory volume in the first second
  2. aindicates analysed categorized by age group
  3. b> 1000 μg/day beclomethasone dipropionate or equivalent