Table 3.

Unadjusted and Fully Adjusted Regression Model on the Association between Height-Adjusted FEV1 and Language Performance (n=180).

	Sentence Comprehension								Naming
	S				N				ANT				BNT
	b	SE	p	β	b	SE	p	β	b	SE	p	β	b	SE	p	β
Unadjusted model:
FEV1	−0.40	0.33	0.22	−0.10	0.03	0.36	0.93	0.01	4.29	2.72	0.11	0.13	10.21	4.34	0.02	0.19
Adjusted model:
FEV1	−0.26	0.34	0.44	−0.07	−0.16	0.34	0.65	−0.04	2.19	3.08	0.48	0.06	5.41	4.57	0.24	0.10
Female (1=F, 0=M)	−0.23	0.11	0.03	−0.32	−0.41	0.12	0.001	−0.50	0.52	1.03	0.61	0.08	−1.66	1.72	0.34	−0.17
Age	0.02	0.01	0.003	0.22	0.01	0.01	0.17	0.10	−0.12	0.06	0.05	−0.16	−0.21	0.10	0.04	−0.17
Education	−0.05	0.03	0.08	−0.14	−0.06	0.03	0.06	−0.14	0.57	0.24	0.02	0.17	1.29	0.37	<.001	0.25
Ever smoked (1=Y, 0=N)	0.01	0.11	0.91	0.02	0.02	0.13	0.09	0.03	−0.18	0.95	0.85	−0.03	1.59	1.44	0.27	0.16
Respiratory disease (1=Y, 0=N)	−0.15	0.14	0.28	−0.21	−0.03	0.16	0.09	−0.03	0.37	1.20	0.76	0.06	0.96	1.75	0.58	0.10
Physical activity z-score	−0.08	0.07	0.23	−0.10	0.16	0.06	0.01	0.15	0.20	0.63	0.76	0.03	0.04	0.82	0.96	0.004

Note: Bold indicates p ≤ .05. b = unstandardized regression coefficient; SE = standard error; β = standardized regression coefficient. S and N percent accuracy were subtracted from 101 and then log-transformed; therefore, higher values represent worse accuracy, and positive coefficients correspond to predictors of worse accuracy. Physical activity was the average of z-scores based on two variables: Number of city blocks walked daily (0–50), and frequency of engaging in sports or vigorous exercise (from 1=never to 5=five or more times per week). For binary predictors, β was standardized with regard to the outcome variable only. For continuous predictors, β was standardized with regard to both the predictor and outcome. Fit indices for the unadjusted model were: AIC = 6189.4, BIC = 6435.3; and for the fully adjusted model: AIC = 3196.6, BIC = 3330.7.