Table 4. Comparative analysis of electrocardiographic data from patients with spondyloarthritis treated or not treated with anti-TNF-α drugs.

Characteristic	Treated with anti-TNF-α n=51	Not treated with anti-TNF-α n=49	p value
Heart rate, bpm	47-98, median 68 (58-77)	47-97, median 68 (60-75)	0.77
Heart rate, duration in seconds	0.61-1.28, mean 0.90±0.15	0.62-1.28, mean 0.89±0.14	0.71
QT, seconds	0.32-0.49, median 0.40 (0.37-0.40)	0.32-0.46, median 0.40 (0.37-0.40)	0.62
QTc, seconds	0.36-0.48, mean 0.41±0.02	0.36-0.49, mean 0.41±0.025	0.53
Incomplete right bundle branch block, n/n total	20/51	17/49	0.63

QTc: corrected QT interval (Bazett formula).