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  • Title: Vitamin D deficiency and rickets in the Eastern Province of Saudi Arabia.
    Author: Al-Mustafa ZH, Al-Madan M, Al-Majid HJ, Al-Muslem S, Al-Ateeq S, Al-Ali AK.
    Journal: Ann Trop Paediatr; 2007 Mar; 27(1):63-7. PubMed ID: 17469734.
    Abstract:
    BACKGROUND: Nutritional rickets remains prevalent in many developing countries, despite the availability of ample sunlight. The aim of this study was to investigate the clinical features and chemical pathology in a group of children with rickets and to compare them with a control group. SUBJECTS AND METHODS: In a case-control study over a 1-year period (March 2004 to February 2005), children clinically diagnosed with rickets (n=61) were age- and sex-matched with controls (n=58). In addition to routine chemical pathology, 25 (OH) vitamin D3 and parathormone (PTH) were determined. Controls were children without clinical rickets attending hospital for other blood investigations. RESULTS: The mean age of children with rickets was 14.8 mths and of controls was 16.5 mths. Mean (SD) body mass index of the children with rickets [16.8 (1.86)] was not significantly different from that of the controls [17.02 (3.16)]. Mean (SD) head circumference of rachitic children [45.41 (3.64) cm] was greater than that of controls [44.39 (5.07) cm, p=0.03]. Eighty per cent of the children with rickets were breastfed compared with 67% of controls. Thirty per cent of children with rickets were hypocalcaemic vs <7% of controls, 89% had phosphorus values <1.5 mmol/L vs 34.5% of controls and 75% had alkaline phosphatise levels >500 IU/L vs 28% of controls. Seventy-five per cent of children with rickets had serum 25 (OH) D3 <20 nmol/L vs 25% of controls. Mean (SD) PTH level was 23.59 (19.03) pmol/L in the rachitic group and 1.9 (1.05) pmol/L in controls (p<0.05). Lack of exposure to sunlight was recorded in 90% of the children with rickets and in 37% of the controls. CONCLUSION: Apparently healthy children living in areas where rickets is prevalent have risk factors for rickets and a small proportion will have evidence of biochemical rickets.
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