Table 2.

Skewness and correlations among all analytic variables (n= 180).

	Skewness	FEV1_h	FVC_h	FFR	Female	Age	Education	Respiratory disease	Physical activity z-score	Smoking	S†	N†	ANT
FEV1_h	0.58	--
FVC_h	0.85	0.91
FFR	−1.17	0.38	−0.04
Female	−0.69	−0.33	−0.42	0.15
Age	−0.35	−0.24	−0.19	−0.16	−0.12
Education	−0.85	0.19	0.19	0.04	−0.04	−0.20
Respiratory disease	1.55	−0.09	−0.02	−0.16	0.06	−0.15	0.09
Physical activity z-score	0.64	0.12	0.13	−0.01	−0.06	−0.17	0.20	−0.11
Smoking	0.09	−0.26	−0.19	−0.20	−0.07	0.06	−0.10	0.14	0.002
S†	−0.52	−0.10	−0.14	0.05	−0.15	0.32	−0.22	−0.12	−0.15	0.05
N†	−0.72	0.01	0.03	−0.05	−0.24	0.14	−0.13	−0.07	0.12	0.06	0.25
ANT	−0.63	0.13	0.16	−0.08	0.03	−0.22	0.22	0.05	0.09	−0.06	−0.42	−0.22
BNT	−0.85	0.19	0.25	−0.09	−0.11	−0.24	0.30	0.09	0.10	0.031	−0.44	−0.22	0.52

Notes: Correlations were estimated with full-information maximum likelihood robust method. Bold indicates p ≤ .05.

^†S and N percent accuracy were subtracted from 101 and then log-transformed due to skewness; higher scores indicate lower accuracy.