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Table 5 Total bone mineral density by quartiles of serum 25(OH)D level, stratified by race/ethnicity and age

From: Associations between serum calcium, 25(OH)D level and bone mineral density in adolescents

Quartiles of 25(OH)D level White Black Mexican American Other race
Total BMD g/cm2 (95% Confidence Interval)
12 to 15 years
 Lowest quartile 0.975 (0.929, 1.022) 1.064 (1.054, 1.074) 0.996 (0.979, 1.013) 1.027 (0.996, 1.058)
 2nd 0.994 (0.973, 1.015) 1.068 (1.056, 1.079) 0.994 (0.982, 1.007) 0.993 (0.970, 1.016)
 3rd 1.013 (1.001, 1.025) 1.061 (1.048, 1.075) 1.012 (1.002, 1.023) 1.000 (0.981, 1.020)
 Highest quartile 1.011 (1.002, 1.020) 1.071 (1.052, 1.090) 1.014 (1.000, 1.027) 1.050 (1.026, 1.074)
 P for trend 0.134 0.780 0.024 0.079
16 to 19 years
 Lowest quartile 1.106 (1.073, 1.139) 1.212 (1.204, 1.220) 1.107 (1.094, 1.120) 1.135 (1.107, 1.162)
 2nd 1.126 (1.106, 1.146) 1.203 (1.191, 1.215) 1.109 (1.098, 1.119) 1.153 (1.128, 1.178)
 3rd 1.127 (1.115, 1.140) 1.198 (1.182, 1.215) 1.115 (1.104, 1.125) 1.136 (1.115, 1.157)
 Highest quartile 1.144 (1.136, 1.152) 1.210 (1.188, 1.232) 1.140 (1.128, 1.152) 1.160 (1.136, 1.185)
 P for trend 0.003 0.262 < 0.001 0.347
  1. Gender, body mass index, income poverty ratio, physical activity, and calcium supplement use were adjusted