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Table 5 25(OH)D concentration in 4775 serum samples from South China—descriptive statistics

From: Determination of serum 25-hydroxyvitamin D status among population in southern China by a high accuracy LC-MS/MS method traced to reference measurement procedure

Sex All < 18 years 18-40 years 41-60 years 61-80 years > 80 years
M (n = 1946) F (n = 2829) M (n = 1544) F (n = 1165) M (n = 119) F (n = 1355) M (n = 152) F (n = 166) M (n = 105) F (n = 114) M (n = 26) F (n = 29)
25(OH)D(ng/mL)
 Median 34.26 29.4*** 35.7 34.16** 26.07 26.43 29.66 28.29 30.5 27.2*** 24.66 22.0
 Mean ± SD 35.45 ± 11.71 30.60 ± 11.35 37.09 ± 11.58 35.80 ± 12.0 27.86 ± 9.29 26.91 ± 9.51 29.61 ± 10.65 28.32 ± 8.18 30.65 ± 6.62 29.49 ± 8.39 26.42 ± 9.0 24.38 ± 9.23
 25th–75th 27.2–42.0 22.67–36.89 29.2–43.87 27.3–42.7 21.9–34.07 20.1–32.44 22.35–37.19 23.3–32.91 24.35–37.75 20.77–31.83 20.56–31.45 19.27–28.39
  1. *P < 0.05, **P < 0.01, ***P < 0.001, M male, F female