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Table 2 Baseline1 population characteristics of Framingham Heart Study participants contributing to SNP analysis

From: Association of 25-Hydroxyvitamin D status and genetic variation in the vitamin D metabolic pathway with FEV1 in the Framingham Heart Study

SNP—FEV1 Analysis

Offspring Cohort

N in analysis

N = 3,230

FEV1, L

3.0 (0.8)

Follow-up duration, yr

14.7

Baseline age, yr

50.9 (10.3)

Male, %

47

Height, cm

165.5 (9.5)

Baseline pack-years

25.4 (21.3)

Current smokers2, %

24.6

Former smokers2, %

39.8

  1. 1 Baseline measurements refer to Exam 5; Participant characteristics listed as mean (SD) for continuous variables and number (%) for categorical variables
  2. 2 Current smokers at baseline; former smokers at all time points
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Respiratory Research

ISSN: 1465-993X

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