Age and anti-M2muscarinic acetylcholine receptor (mAChR) antibody distribution in chagasic patients with (group I) or without (group II) megacolon and in normal controls (group IV)
Values are mean (SEM).
↵3-150 p<0.05,
↵3-160 p<0.002 versus seronegative patients from the same group.
Prevalence values of anti-M2 mAChR antibodies between groups I and II were compared by χ2 test (χ2=10.35, p<0.001).