Table 2.

Presence of circuit coagulation in the overall cohort

	Absent	Present	P
Circuit coagulation	255/309	54/309
		17.5% (13.2 – 21.7%)1
Performed treatment time (mean min ± sd)	219 ± 47	170 ± 49	< 0.0001
Treated blood volume (mean litres ± sd)	54.9 ± 13.6	40.5 ± 13.2	< 0.0001
Circuit coagulation with premature termination2	262/309	47/309
		15.2% (11.4 – 19.7%)1
Complete circuit coagulation3	296/309	13/309
		4.2% (2.2% – 7.1%)1

¹proportion with 95% CI.

²shortening of scheduled dialysis session length because of circuit clotting.

³massive clotting with inability to retransfuse blood from extracorporeal circuit.