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Table 4 Relationships between incremental haematological data and intervention variables

From: Dietary iron intervention using a staple food product for improvement of iron status in female runners

Changes in haematological indices

% change

Correlations with

r value,Pvalue

ΔsTRF (g/L)

-5.4

Baseline sTRF

r = - 0.7, P < 0.05

Baseline sTsfR

r = - 0.8, P < 0.01

Baseline TIBC

r = - 0.7, P < 0.05

Baseline sTsfR-F index

r = - 0.8, P < 0.005

No of days of intervention1

r = - 0.7, P < 0.05

ΔsTsfR (mg/L)

-12.8

Baseline sTsfR

r = - 0.8, P < 0.05

Baseline sTRF

r = - 0.6, P < 0.05

Baseline TIBC

r = - 0.6, P < 0.05

Baseline sTsfR-F index

r = - 0.8, P < 0.005

No of days of intervention*

r = - 0.6, P < 0.05

ΔsFer (μg/L)

+5.4

Δ sTsfR-F index

r = - 0.6, P < 0.05

Δ dietary iron intake†

r = 0.8, P < 0.05

  1. Key: sTRF - serum transferring, sTsfR - serum transferrin receptor, sFer - serum ferritin.
  2. *partial correlations controlling for corresponding baseline haematological parameter.
  3. †partial correlations controlling for changes in dietary calcium and vitamin C intake.
  4. Δrepresents an incremental change.
  5. *DRV cut-off value.