Figures in brackets are standard deviation of the mean. eGFR = estimated glomerular filtration rate, 25 (OH) D = 25 hydroxy vitamin D, Hb = haemaglobin, PTH = parathyroid hormone, CRP = C rea
Continuous variables were expressed as means ± SDsa or medians (IQRs)b and were compared by the Student's t test a or Mann-Whitney U testb CURB-65: Confusion-Urea-Respiratory-Blood pressure-65 score,
