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. Author manuscript; available in PMC: 2015 Mar 10.
Published in final edited form as: Kidney Int. 2011 Jul 20;80(7):777–782. doi: 10.1038/ki.2011.227

Figure 1. From 24 studies involving 300 non-stone-forming subjects conducted on a constant restricted diet, 24-h urinary calcium is displayed according to the year of publication.

Figure 1

For each study, mean±s.d. is depicted as vertical bars. For all 300 subjects, mean±2 s.d. are shown as long and short dashed horizontal lines. In this report, urinary calcium was expressed as mg/day, because of the perception that this expression would be familiar to the readership of this journal. Urinary calcium in mg/day divided by 40 equals the amount in mmol/day.