Table 1.

Measures of Physical Function in Georgia Centenarians with and without Anemia and Results of a Series of Linear Regression Analyses Examining Associations Between Measures of Physical Function or Strength (Dependent Variable) and Anemia Status (Independent Variable)^ab

	Anemia Status			Partially Adjusted Modelc
Characteristic, mean (± SD)	Anemic	Non-anemic	P-value	Difference (95%CI)	P-value
Age (years)	100.1 (± 1.7)	100.7 (± 2.0)	0.191	_	_
Hemoglobin (g/dl)	10.9 (± 1.0)	13.2 (± 0.9)	<0.0001	_	_
Grip strength, average (kg) (n=216)	9.3 (± 8.7)	12.8 (± 12.3)	0.040	−3.7 (−6.1 to −1.2)	0.003
Leg strength, average (kg) (n=142)	7.5 (± 5.0)	8.9 (± 6.1)	0.112	−1.8 (−3.6 to −0.1)	0.037
Directly assessed functional status, basic activities of daily living (DAFS BADL; n=204)	17.1 (± 7.5) d	17.5 (± 7.6)	0.407	0.40 (−1.5 to 2.3)	0.685
Directly assessed functional status, instrumental activities of daily living (DAFS IADL; n=204)	27.3 (± 18.4)	27.6 (± 17.9)	0.901	1.5 (−2.8 to 5.9)	0.491
Short Physical Performance Battery (SPPB; n=211)	1.45 (± 2.2)	1.7 (± 2.4)	0.532	−0.04 (−0.6 to 0.5)	0.898
Georgia Centenarian Study Composite Scalef (GCS; n=217)	5.2 (± 3.0)	5.8 (± 3.0)	0.164	−0.4 (−1.0 to 0.3)	0.284

^aIndividuals missing information for the dependent variable were excluded from the pertinent analyses.

^bAnemia defined as hemoglobin <12 g/d for females and <13 g/dl for males

^cAdjusted for demographics (sex, race, and living arrangements).

^dPossible range of scores for functional tests: DAFS BADL, 0-23; DAFS IADL, 0-58; SPPB, 0-12; GCS Composite, 0-12.

SD = standard deviation.