Tables
- TABLE 1
Summary statistics for baseline demographics and predictor variables
Baseline variable COPD in wave 9 p-value Overall No Yes Subjects n 3475 109 3584 Age years 47.6±1.5 47.7±1.4 0.205# 47.6±1.5 BMI kg·m−2 25.4±4.7 26.5±5.5 0.059# 25.5±4.7 SF-36 PCS 51.9±7.8 49.9±9.3 0.035# 51.9±7.9 SF-36 MCS 49.5±10.0 46.4±11.1 0.004# 49.5±10.1 SEIFA IRSD 1011±86 1000±77 0.160# 1010±85 Education level 0.009¶ Less than high school 1748 (42.8) 61 (56.0) 1539 (43.2) High school/trade/diploma 1328 (38.5) 33 (30.3) 1361 (38.2) University/postgraduate 645 (18.7) 15 (13.8) 660 (18.5) Presence of back pain 0.077¶ Never 901 (26.0) 20 (18.3) 921 (25.8) Rarely 932 (26.9) 31 (28.4) 963 (27.0) Sometimes 1100 (31.8) 37 (33.9) 1137 (31.8) Often 529 (15.3) 21 (19.3) 550 (15.4) Presence of chest pain 0.204¶ Never 2769 (80.4) 82 (75.2) 2851 (80.2) Rarely 419 (12.2) 18 (16.5) 437 (12.3) Sometimes/often 256 (7.4) 9 (8.3) 265 (7.5) Breathing difficulties <0.001¶ Never 2723 (78.9) 62 (57.4) 2785 (78.3) Rarely 367 (10.6) 23 (21.3) 390 (11.0) Sometimes/often 361 (10.5) 23 (21.3) 384 (10.8) Asthma <0.001+ No 3104 (89.4) 82 (75.2) 3186 (89.0) Yes 368 (10.6) 27 (24.8) 395 (11.0) Presence of allergies, hay fever, sinusitis 0.002¶ Never 1478 (42.8) 31 (28.7) 1509 (42.4) Rarely 613 (17.7) 22 (20.4) 635 (17.8) Sometimes 911 (26.4) 33 (30.6) 944 (26.5) Often 453 (13.1) 22 (20.4) 475 (13.3) Walking 100 m 0.113+ Not limited 3317 (96.5) 101 (93.5) 3418 (96.4) Limited (a little or a lot) 122 (3.5) 7 (6.5) 129 (3.6) Walking ½ km 0.049+ Not limited 3204 (93.3) 95 (88.0) 3299 (93.2) Limited (a little or a lot) 229 (6.7) 13 (12.0) 242 (6.8) Walking 1 km 0.024+ Not limited 2951 (85.9) 84 (77.8) 3035 (85.7) Limited (a little or a lot) 483 (14.1) 24 (22.2) 507 (14.3) Data presented as n (%) or mean±sd unless otherwise indicated. BMI: body mass index; SF-36 PCS: physical component summary; SF-36 MCS: mental component summary; SEIFA IRSD: Socioeconomic Indexes for Areas index of relative socioeconomic disadvantage. p-values are from: #: two-sample t-test; ¶: Kruskal–Wallis test; +: Fisher's exact test.
- TABLE 2
Odds of having COPD in wave 9 in never-smokers with 95% confidence interval, multivariable model
Predictor variable OR (95% CI) p-value BMI 1.01 (0.97–1.05) 0.736 Education level 0.042 Less than high school Reference High school/trade/diploma 0.63 (0.40–0.98) University/postgraduate 0.58 (0.30–1.03) SEIFA (per 100 units) 0.95 (0.76–1.21) 0.692 Breathing difficulties <0.001 Never Reference Rarely 2.31 (1.34–3.86) Sometimes/often 1.68 (0.89–3.08) Presence of asthma 0.083 No Reference Yes 1.65 (0.92–2.89) SF-36 PCS (per 10 units) 0.84 (0.67–1.05) 0.115 SF-36 MCS (per 10 units) 0.78 (0.66–0.94) 0.008 BMI: body mass index; SEIFA: Socioeconomic Indexes for Areas; SF-36 PCS: physical component summary; SF-36 MCS: mental component summary.
Supplementary Materials
Supplementary Material
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Supplementary material 00532-2021.supplement
