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Table 1 Characteristics of U.S. Adults with COPD, NHANES 2007–2012

From: Omega-3 fatty acid intake and prevalent respiratory symptoms among U.S. adults with COPD

Demographics

 

Age (years)

60.6 ± 8.4

Male (%)

63.5

Ethnicity (%)

Non-hispanic White

85.1

Others

14.8

Pack-Years

30.4 ± 23.8

BMI, kg/m2

27.3 ± 4.9

Dietary Intake

Energy (kcal)

2112 ± 680

Omega-3

EPA + DHA (g)

0.11 ± 0.21

ALA (g)

1.71 ± 0.89

Omega-6

LA (g)

16.5 ± 8.0

Lung Function

 

FEV1, L

2.5 ± 0.7

FVC, L

3.9 ± 0.9

FEV1/FVC

0.63 ± 0.06

Symptom Prevalence (%)

Chronic cough

19.2

Nocturnal cough

6.9

Phlegm

17.7

Wheeze (any)

21.0

Nocturnal Wheeze

9.4

Wheeze with exertion

8.1

Meds for wheeze

5.4

  1. Mean ± SD unless otherwise noted
  2. n = 878
  3. BMI: Body Mass Index; EPA: eicosapentaenoic acid; DHA: docosahexaenoic acid; ALA: alpha-linolenic acid; LA: linoleic acid; FEV1: forced expiratory volume in one second; FVC: forced vital capacity