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Fig. 2 | BMC Geriatrics

Fig. 2

From: Vitamin B12 and folate levels in healthy Swiss senior citizens: a prospective study evaluating reference intervals and decision limits

Fig. 2

Vitamin B12 and holoTC serum levels in three arbitrarily defined advanced age groups classified according to sex. The box plot representation with vitamin B12 (panel a) and holoTC (panel b) as appearing in three age groups. The difference of vitamin B12 concentrations among males and females is significant in 70–79 year old (p = 0.001) and not significant in the participants aged 60–69 (p = 0.07) and ≥ 80 years (p = 0.69). The same comparisons of holoTC concentrations are significant for participants aged 60–69 and 70–79 (both p < 0.001), and not significant in the particpants ≥ 80 years (p = 0.77) 

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