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Table 2 Proportion of cases (participants with disability pension) in relation to baseline characteristics

From: Does lung function predict the risk of disability pension? An 11-year register-based follow-up study

 Total n/meanCases n/meanProportion of cases %P-value
All338636210.7 
Study groups
 Controls318032710.30.005
 Obstructive spirometry1111614.4 
 Restrictive spirometry951920.0 
Background variables
 Age, mean, years44.3 (8.3)48.7 (6.6) < 0.001
 Gender   0.018
  Male16671579.4 
  Female171920511.9 
 Only basic education75712716.8< 0.001
 Doctor-diagnosed asthma2233314.80.040
 Self-reported COPD19631.60.012
 Chronic brochitis1061716.00.055
 Comorbidities   < 0.001
  017631116.3 
  1109812311.2 
   ≥ 252512824.4 
 Smoking
  Non-smoker16201499.20.026
  Ex-smoker6958311.9 
  Current smoker107013012.1 
 Cotinine > 100 μg91812413.50.001
 BMI   < 0.001
   < 2514111158.2 
  25–29.9134715111.2 
   ≥ 306279615.3 
 Physically active188619510.30.586
  1. BMI body mass index, FEV1 forced expiratory volume in one second
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