Table 1.
Patient Characteristics.
| Never-smoker (n=83) |
Ex-smoker (n=74) |
Current smoker (n=27) |
p value† | |||||
|---|---|---|---|---|---|---|---|---|
| Female (%) | 66 (79.5) | 26 (35.0) | 10 (37.0) | <0.0001 | ||||
| Age at survey, years (SD) | 60.7 (16.8)‡ | 63.1 (12.0)§ | 50.4 (13.2) | <0.0001 | ||||
| Age of onset, years (SD) | 51.3 (20.1)‡ | 52.4 (14.0)‡ | 42.3 (13.8) | 0.028 | ||||
| Disease duration, years (SD) | 9.45 (10.1) | 10.7 (9.90) | 8.11 (6.70) | 0.449 | ||||
| Anti-AChR antibody (%) | 62 (74.1) | 61 (82.4) | 18 (66.7) | 0.204 | ||||
| Generalized (%) | 65 (78.3) | 60 (81.1) | 22 (81.5) | 0.889 | ||||
| Thymoma (%) | 27 (32.5) | 21 (28.9) | 7 (25.9) | 0.779 | ||||
| Steroids or immunosuppressants (%) | 69 (83.1) | 64 (86.5) | 26 (96.3) | 0.218 |
SD: standard deviation, AChR: acetylcholine receptor, †p value by one-way analysis of variance or Fisher’s extract test, ‡p<0.05, compared with the current-smoker group (Bonferroni’s correction), §p<0.01 compared with the current-smoker group (Bonferroni’s correction).