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Table 2 Correlation coefficients between IGF-I levels at baseline and other variables

From: Associations between serum levels of insulin-like growth factor-I and bone mineral acquisition in pubertal children: a 3-year follow-up study in Hamamatsu, Japan

 

Boys, N = 121

Girls, N = 133

r

P

r

P

Baseline

 Height

0.510

< 0.001

0.606

< 0.001

 Weight

0.473

< 0.001

0.613

< 0.001

 TBLH BMC

0.521

< 0.001

0.600

< 0.001

 TB bone area

0.557

< 0.001

0.637

< 0.001

 TBLH aBMD

0.371

< 0.001

0.512

< 0.001

 TB BMAD

-0.435

< 0.001

-0.457

< 0.001

Follow-up

 Height

0.420

< 0.001

0.275

< 0.001

 Weight

0.489

< 0.001

0.434

< 0.001

 TBLH BMC

0.543

< 0.001

0.493

< 0.001

 TB bone area

0.554

< 0.001

0.450

< 0.001

 TBLH aBMD

0.455

< 0.001

0.461

< 0.001

 TB BMAD

− 0.129

ns

0.140

ns

  1. IGF-I insulin-like growth factor-I, N number, TBLH total body less head, BMC, bone mineral content, TB total body, aBMD areal bone mineral density, BMAD bone mineral apparent density as an estimate of volumetric bone mineral density, ns not significant
  2. Pearson's correlation coefficient was used. P < 0.05 was considered statistically significant