Table 2.

Primary and secondary outcomes

Outcomes	Dialysate K 2 mmol/l (total = 695 sessions)	Dialysate K 3 mmol/l (total = 685 sessions)	P
Primary outcome
Proportion of dialysis session with intradialytic hypertensiona	380 (54.7)	364 (53.1)	0.788b
Secondary outcome
Proportion of dialysis session with that had intradialytic systolic blood pressure increased >20 mm Hg	231 (33.2)	217 (31.7)	0.932b
Average intradialytic systolic blood pressure (mm Hg)	140.7 ± 12.2	143.7 ± 13.4	Treatment effect: P = 0.001 Sequence effect: P = 0.458 Period effect: P = 0.445 Carryover effect: P = 0.058
Average intradialytic mean arterial pressure (mm Hg)	99.0 ± 11.4	100.9 ± 11.8	Treatment effect: P = 0.011 Sequence effect: P = 0.236 Period effect: P = 0.557 Carryover effect: P = 0.044

^aIntradialytic hypertension was defined as an increase in intradialytic systolic blood pressure of more than 10 mm Hg. Data were presented in mean ± SD or n (%).

^bP values were calculated by mixed-effects logistic regression.