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. 2021 Dec 22;11(12):e055770. doi: 10.1136/bmjopen-2021-055770

Figure 1.

Figure 1

The study design of the PRECEDE-K Study. *For patients receiving HD three times per week, V2 could be at d3 or d5 for collecting pre-dialytic serum potassium at SIDI. For patients receiving HD two times per week, visit 2 will be waived as there is no SIDI for these patients; thus, there are seven visits in total. **Time window is ±1 week. d, day; ESRD, end-stage renal disease; LIDI, long interdialytic interval; PRECEDE-K, HK Prevalence, Recurrence, and Treatment in Haemodialysis; SIDI, short interdialytic interval; V, visit; w, week.