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Table 1 Characteristics of Subjects With and Without History of Childhood Pneumonia

From: Childhood pneumonia increases risk for chronic obstructive pulmonary disease: the COPDGene study

 

Childhood Pneumonia

No Childhood Pneumonia

p Valueb

 

N = 854 (8.4 %)

N = 9302 (91.6 %)

 

DEMOGRAPHIC

 Male gender (%)

437

(51.2 %)

4990

(53.6 %)

0.18

 Mean age, years (SD)

61.7

(8.9)

59.4

(9.0)

<0.001c

 Non-Hispanic white (%)

693

(81.1 %)

6073

(65.3 %)

<0.001

SMOKE EXPOSURE

 In-utero smoke exposure (%)a

206

(33.0 %)

2082

(30.2 %)

0.18

 Lived with smoker in childhood (%)a

732

(85.7 %)

7618

(81.9 %)

0.006

 Mean age started smoking, years (SD)

16.5

(4.4)

16.9

(4.7)

0.06

 Pack-years of smoking (SD)

49.8

(28.4)

43.7

(24.6)

<0.001

 Current smoking (%)

379

(44.4 %)

5011

(53.9 %)

<0.001

PNEUMONIA HISTORY

 Ever had pneumonia (%)

854

(100.0 %)

2979

(33.9 %)

<0.001

 Diagnosed with pneumonia by healthcare provider (%)a

821

(96.1 %)

2920

(31.4 %)

<0.001

 Pneumonia childhood age unknown (%)

378

(44.3 %)

0

(0.0 %)

<0.001

 Age first pneumonia in years, mean (SD)a

7.7

(4.5)

42.5

(15.6)

<0.001

 Lifetime pneumonia episodes (SD)a

3.9

(4.9)

2.5

(3.0)

<0.001

  1. Abbreviations: SD standard deviation
  2. aSubjects included are fewer than total subjects due to subject survey response being missing or unclassifiable
  3. bUnivariate analysis with chi-square or Wilcoxon rank sum test unless otherwise specifiedc t test