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. 2018 Jan 18;13(1):e0191409. doi: 10.1371/journal.pone.0191409

Table 2. Survey weighted univariate regressions.

Coefficient (change in FEV1% predicted)
[95% C.I.]
NHANES III Cohort NHANES 2007–2012 Cohort
n = 14,088 Coefficient P value n = 14,036 Coefficient P value
Sex (male = 0; female = 1) 0.17
(-0.50, 0.84)
0.61 1.06
[0.38, 1.73]
0.003
Race/Ethnicity (white = 0; nonwhite = 1) 0.08
[-0.94, 1.11]
0.87 -0.29
[-0.98, 0.41]
0.41
Age (per year) -0.12
[-0.14, -0.10]
<0.001 -0.14
[-0.16, -0.12]
<0.001
Log Income (per Log $) 0.74
[-0.08, 1.55]
(n = 12,815)
0.08 0.48
[-0.68, 1.63]
(n = 13,452)
0.41
Insurance (private = 0; public = 1) -3.21
[-3.92, -2.50]
(n = 11,088)
<0.001 0.76
[-0.18, 1.69]
(n = 11,274)
0.11