ACPA outcome | Positive | Negative (< 20 units/ml) | |||
---|---|---|---|---|---|
Strong (≥60 units/ml) | Moderate (40–59 units/ml) | Weak (20–39 units/ml) | |||
Number of subjects (%) | 134 (1.8) | 158 (2.1) | 494 (6.5) | 6788 (89.6) | |
Mean agea(standard deviation) | 55.1 (7.5) | 53.8 (7.8) | 54.6 (7.6) | 54.0 (7.7) | |
Female, N (%) | 76 (56.7) | 88 (55.7) | 247 (50.0) | 3441 (50.7) | |
Ancestry, N (%) | French Canadian | 96 (71.6) | 103 (65.2) | 330 (66.8) | 4571 (67.3) |
Other | 38 (28.4) | 55 (34.8) | 164 (33.2) | 2217 (32.7) | |
Smokersb,N (%) | Never | 45 (33.6) | 68 (43.0) | 225 (45.5) | 2710 (39.9) |
Occasional | 69 (51.5) | 67 (42.4) | 208 (42.1) | 3141 (46.2) | |
Daily | 20 (14.9) | 23 (14.6) | 59 (11.9) | 913 (13.5) | |
Annual income level, N (%) (Canadian $) | < 25,000 | 13 (9.7) | 19 (12.0) | 44 (8.9) | 631 (9.3) |
25,000 to 49,999 | 29 (21.6) | 34 (21.5) | 94 (19.0) | 1363 (20.1) | |
50,000 to 74,999 | 32 (23.9) | 29 (18.4) | 111 (22.5) | 1447 (21.3) | |
75,000 to 149,999 | 38 (28.4) | 49 (31.0) | 151 (30.6) | 2233 (32.9) | |
> 150,000 | 15 (11.1) | 15 (9.5) | 64 (13.0) | 782 (11.5) | |
Range, mean, and standard deviation of exposure variables | Industrial SO2(ppb) | 0.64–19.57, 2.89, 2.34 | 0.62–71.19, 2.91, 5.71 | 0.61–17.14, 2.69, 1.94 | 0.34–60.98, 2.56, 2.15 |
Industrial NO2(ppb) | 0.16–3.01, 1.14, 0.56 | 0.27–6.05, 1.25, 0.73 | 0.26–4.06, 1.13, 0.57 | 0.12–7.76, 1.16, 0.52 | |
Industrial PM2.5(μg/m3) | 0.06–2.87, 0.27, 0.39 | 0.05–14.09, 0.28, 1.14 | 0.05–3.12, 0.23, 0.32 | 0.03–11.17, 0.21, 0.36 | |
Overall PM2.5(μg/m3) | 5.27–14.85, 11.24, 3.06 | 5.58–14.85, 11.55, 2.97 | 5.22–14.85, 11.44, 3.02 | 5.13–14.85, 11.76, 2.90 |