Bivariate relationships between haemoglobin concentrations, physical and cognitive performance and age as a continuous variable (n=4499)
| Men | Women | |||
| Correlation coefficient | P values | Correlation coefficient | P values | |
| Walk speed* | 0.057 | 0.009 | 0.011 | 0.60 |
| Grip strength* | 0.161 | <0.001 | 0.076 | <0.001 |
| Cognitive z-score | 0.047 | 0.04 | 0.027 | 0.19 |
| Age | −0.121 | <0.001 | 0.021 | 0.30 |
| Age; healthy only† | −0.189 | <0.001 | 0.100 | 0.007 |
Pearsons correlation coefficient except for *Spearman’s rho.
†Excluding those with comorbid disease, impairment of activities of daily living or C reactive protein ≥4 mg/L.