Table 2

 Baseline characteristics of patients in prednisone and pyridostigmine treatment groups

CharacteristicsPrednisone group (n = 55)Pyridostigmine group (n = 34)p Value*
Abnormal acetylcholine receptor antibody(n = 26) Mean (SD)(n = 15) Mean (SD)
PCT, prism cover test.
*From Wilcoxon rank sum test.
†From exact χ2 test.
Age (years)48.4 (15.5)52.6 (23.8)0.16
Acetylcholine receptor antibody (nmol/l)2.7 (9.6)2.8 (6.4)0.35
Primary gaze, horizontal PCT (dioptres)12.2 (12.1)13.3 (10.8)0.54
Primary gaze, vertical PCT (dioptres)5.5 (6.3)5.4 (6.4)0.84
Downward gaze, horizontal PCT (dioptres)9.8 (10.4)11.1 (9.5)0.44
Downward gaze, vertical PCT (dioptres)6.3 (6.2)5.5 (6.9)0.50
n (%) n (%) p Value†
Sex—male30 (54.6%)17 (50.0%)0.83
Abnormal acetylcholine receptor antibody26 (47.2%)17 (50%)0.71
Diplopia primary gaze52 (94.6%)29 (85.3%)0.25
Diplopia downward gaze45 (81.8%)27 (79.4%)0.79
Ptosis, unilateral25 (45.5%)17 (50.0%)0.83
Ptosis, bilateral6 (10.9%)11 (32.4%)0.02