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Table 1 Demographic characteristics of the study population

From: Clinical profile of recurrent community-acquired pneumonia in children

  Patients with rCAP % Healthy controls % Comparison between groups
(n = 146)   (n = 145)   p*
Gender      
  Female 73 50.0 73 50.0 0.95
  Male 73 50.0 72 50.0  
Age, mean ± SD (yrs) 7.9 ± 4.5   8.1 ± 4.5   0.70
Gestational age (weeks)      
  <32 11 7.5 0 0  
  32-36 18 12.3 17 11.7 0.003
  ≥37 117 80.2 128 88.3  
Birth weight (g)      
  <750 3 2.1 0 0  
 750-1,000 1 0.7 0 0  
  1,001-1,500 7 4.8 0 0 0.006
  1,501-2,500 14 9.6 7 4.8  
  >2500 121 82.8 138 95.2  
Respiratory distress at birth      
  Yes 26 17.8 0 0 <0.001
  No 120 82.2 145 100  
Breast-feeding >3 months      
  Yes 83 58.4 85 58.6 0.94
  No 59 41.6 60 41.4  
Type of dwelling      
  Urban 127 87.0 124 85.5 0.72
  Rural 19 13.0 21 14.5  
Exposure to cigarette smoke      
  Yes 55 37.7 45 31.0 0.23
  No 91 62.3 100 69.0  
Number of siblings      
  0 48 32.9 45 31.0 0.08
  1 66 45.2 74 51.0  
  2 26 17.8 26 17.9  
  ≥3 6 4.1 0 0  
Age starting day care attendance      
  ≤1 year 14 9.6 0 0 <0.001
  >13-23 months 24 16.4 2 1.4  
  24-35 months 33 22.6 40 27.6  
  36-47 months 64 43.8 103 71.0  
  ≥4 years 11 7.5 0 0  
  1. rCAP: recurrent community-acquired pneumonia; SD: standard deviation. *P values were calculated using Student’s t test, the chi-squared test or Fisher’s test, as appropriate.