Table 2.

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.