Design	Citation	Tier	Vitamin D dose	Age	Urinary Ca/Cr ratio
			(μg/day)	(weeks)	unit	(mean)	(SD)
RCT	Holmlund‐Suila et al. (2012)	2	10	13	mmol/mmol	2	n.a.
			30	12	mmol/mmol	1.95	n.a.
			40	13	mmol/mmol	2.1	n.a.
	Gallo et al. (2013a)	1	10	0	othera	1.9	n.a.
			10	4	othera	1.6	n.a.
			10	8	othera	1.7	n.a.
			10	21	othera	1.7	n.a.
			10	34	othera	0.9	n.a.
			10	48	othera	0.85	n.a.
			20	0	othera	2.2	n.a.
			20	4	othera	2.1	n.a.
			20	8	othera	1.85	n.a.
			20	21	othera	1.7	n.a.
			20	34	othera	0.8	n.a.
			20	48	othera	0.5	n.a.
			30	0	othera	1.9	n.a.
			30	4	othera	2.1	n.a.
			30	8	othera	2	n.a.
			30	21	othera	1.6	n.a.
			30	34	othera	0.6	n.a.
			30	48	othera	0.85	n.a.
			40	0	othera	1.7	n.a.
			40	4	othera	1.9	n.a.
			40	8	othera	2.1	n.a.
			40	21	othera	1.6	n.a.
PROSP	Hoppe et al. (1997)	3	12.5	0	mol/mol	0.1	0.41
			12.5	0	mol/mol	0.22	0.48
			12.5	9	mol/mol	0.27	0.87
			12.5	9	mol/mol	0.36	0.6
	Czech‐Kowalska et al. (2012)	2	16.75b	0	mg/mg	0.46	0.53
			16.75b	11	mg/mg	0.57	0.28
			12.5c	0	mg/mg	0.39	0.27
			12.5c	11	mg/mg	0.61	0.7

PROSP: prospective cohort study; RCT: randomised controlled trial; SD: standard deviation.

The values of urinary Ca/Cr ratio from the study by Siafarikas et al. (2011) not included as the unit was not reported in the paper.

^aoutside of the normal range of the hospital (Section 3.3.2.2).

^bvitamin D deficient subjects (Section 3.3.2.3).

^cvitamin D insufficient subjects (Section 3.3.2.3).