Table 3.

Weighted ANCOVA table for COPD severity and MVPA controlling for age, body mass index, sex, accelerometer wearing time, season, work, levels of cotinine, education, income, and ∆ (FEV_indv−0.7).

	Estimate	SE	95% CI	t	p
COPD stages
Stage I	0.02	0.09	−0.15–0.21	0.31	0.76
Stage II	−0.3	0.1	−0.59–0.07	−2.49	0.01
Stage ≥ III	−0.8	0.2	−1.31–0.38	−3.52	0.0005
Age	−0.01	0.002	−0.01–0.008	−6.98	0.0001e−7
BMI	−0.04	0.005	−0.05–0.03	−7.94	0.0001e−10
Sex (women)	−0.3	0.04	−0.34–0.18	−6.26	0.0009e−6
Accelerometer wearing	−0.1	0.01	0.07–0.13	6.98	0.0001e−7
Worked last year
Study/retired	−0.1	0.2	−0.48–0.2	−0.82	0.41
Working	0.08	0.08	−0.07–0.23	1.1	0.27
Seasons
Spring	−0.03	0.08	−0.18–0.13	−0.32	0.75
Summer	−0.04	0.07	−0.17–0.08	−0.68	0.5
Winter	−0.1	0.1	−0.37–0.08	−1.25	0.21
Marital status (couple)	−0.2	0.06	−0.31–0.05	−2.8	0.005
Levels of cotinine	−0.002	0.0004E−1	−0.0003–0.0001	−4.74	0.0003e−2
Education
High school	0.1	0.1	−0.1–0.3	1	0.32
Trade school	0.1	0.1	−0.1–0.3	1.02	0.49
College	0.2	0.1	−0.05–0.38	1.49	0.14
University < bachelor	0.2	0.1	0.05–0.43	2.53	0.01
Bachelor	0.4	0.1	0.16–0.64	3.23	0.001
University > bachelor	0.4	0.1	0.15–0.58	3.35	0.0009
Missing	0.1	0.09	−0.07–0.3	1.17	0.24
Household income
$15k–$19.99k	−0.2	0.2	−0.54–0.23	−0.79	0.43
$20k–$29.99k	−0.2	0.2	−0.48–0.15	−1.01	0.32
$30k–$39.99k	−0.1	0.1	−0.41–0.12	−1.06	0.29
$40k–$49.99k	−0.1	0.1	−0.44–0.15	−0.95	0.34
$50k–$59.99k	−0.2	0.2	−0.5–0.16	−1.02	0.31
$60k–$79.99k	−0.02	0.1	−0.31–0.26	−0.16	0.87
$80k–$99.99k	0.1	0.1	−0.12–0.39	1.02	0.31
≥$100k	0.08	0.1	−0.21–0.37	0.56	0.58
∆ (FEVindv−0.7)	−0.4	0.4	−1.17–0.29	−1.18	0.24