Figure 1From: Treatment of secondary hyperparathyroidism in haemodialysis patients: a randomised clinical trial comparing paricalcitol and alfacalcidol Flow chart for comparative cross-over study of alfacalcidol and paricalcitol. After a 6 week wash out period, 117 patients are included. Every participating patient receives 16 weeks of treatment with alfacalcidol and 16 weeks of treatment with paricalcitol. The order of the treatments is decided by randomisation.Back to article page