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Table 2 Subgroup analysis to investigate differences between studies included in meta-analysis

From: The relationship between serum vitamin D and fracture risk in the elderly: a meta-analysis

SubgroupStudiesRR (95% CI)I2 (%)P value
Gender
 TF
  Men41.04 (0.85, 1.22)28.10.24
  Women41.14 (0.95, 1.24)13.50.33
 HF
  Men20.99(−0.02, 2.00)56.20.13
  Women31.25 (0.75, 1.75)16.30.3
Region
 Europe60.88 (0.76, 1.01)73.30
 Asia31.5 (1.04, 1.96)00.7
 USA90.98 (0.88, 1.08)70.70
 Australia21.08 (0.86, 1.30)59.80.12
Start time
 TF
  Before 201041.11 (0.93, 1.28)00.82
  After 201071.12 (0.99, 1.24)49.10.07
 HF
  Before 201080.99 (0.87, 1.10)72.40
  After 201040.73 (0.58, 0.88)22.50.28
  1. TF total fractures, HF hip fractures