Vitamin D and calcium status in urban children attending an ambulatory clinic service in the United Arab Emirates

Figures & data

Table 1. Summary statistics of biochemical parameters (the values quoted are the reference ranges*; mean ± SD ** and the percent of children with abnormal values***)

Age group (years)	25-OH D nmol/L > 25*	Ca mmol/L 2.2–2.7	PO4 mmol/L 1.45–1.78	PTH pmol/L 1.3–9.3	ALP (IU/L) 110–302
< 1 (n = 16)	**68.8 (46.9) ***[18.7%]	2.43 (0.11) [0%]	1.74 (0.29) [14.2%]	3.73 (2.2) [0%]	225.8 (75.2) [12.5%]
1–2 (n = 26)	77.4 (33.4) [0%]	2.43 (0.16) [13%]	1.81 (0.20) [0%]	3.26 (2.4) [4.1%]	251.3 (78.4) [21.7%]
2–8 (n = 79)	53.1 (29.3) [15.1%]	2.38 (0.08) [4.2%]	1.67 (0.24) [16.9%]	3.85 (2.2) [6.7%]	195.4 (53.6) [4.1%]
8–12 (n = 48)	35.3 (23.7) [31.2%]	2.34 (0.13) [14.5%]	1.64 (0.19) [10.4%]	6.20 (3.2) [14.5%]	225.7 (78.8) [8.3%]
Total (n = 169)	53.6 (33.4) [17.7%]	2.38 (0.12) [8.2%]	1.70 (0.23) [12.1%]	4.46 (2.8) [8.1%]	218.4 (70.7) [8.8%]

Figure 1. Relationship between 25-OH D and age.

Figure 2. Cumulative frequency graph showing the vitamin D status in both sexes according to four age groups.

Figure 3. Relationship between PTH and 25-OHD concentrations according to four different age groups.

Figure 4. Seasonal variation in vitamin D status. Bars depict one standard error of the mean.