. Author manuscript; available in PMC: 2011 Sep 28.

Published in final edited form as: J Gerontol A Biol Sci Med Sci. 2008 Dec;63(12):1335–1343. doi: 10.1093/gerona/63.12.1335

Table 2.

Bivariate correlations between the dual task decrements (DTD), cognitive function and affect^*

		Average Swing Time DTD		Swing Time Variability DTD
	Outcome Measure	Phoneme Monitoring	Serial 7 Subtractions	Phoneme Monitoring	Serial 7 Subtractions
Cognitive Function	Executive function index	0.16 (0.016)^†	0.15 (0.027)^†	−0.22 (0.0008)^†	−0.20 (0.003)^†
	Attention index	0.12 (0.072)	0.13 (0.053)	−0.17 (0.009)^†	−0.25 (0.0002)^†
	Memory index	0.13 (0.058)	0.11 (0.126)	−0.14 (0.044)^†	−0.10 (0.151)
	Visual-spatial function index	0.02 (0.796)	−0.05 (0.505)	−0.06 (0.390)	−0.06 (0.385)
Affect	ABC Scale	−0.01 (0.917)	−0.01 (0.915)	−0.04 (0.527)	−0.07 (0.304)
	Geriatric Depression Scale	−0.13 (0.056)	−0.17 (0.016)	0.07 (0.309)	0.14 (0.050)
	Trait Anxiety Inventory	−0.10 (0.175)	−0.17 (0.017)^†	0.18 (0.011)^†	0.12 (0.095)
	State Anxiety Inventory	−0.122 (0.082)	−0.16 (0.028)^†	0.15 (0.029)^†	0.07 (0.299)

Numbers are Pearson’s correlation coefficients (p-value).

ABC: Activities-specific Balance Confidence. All correlations where p<0.05 are indicated with a ^†. Results were similar using Spearman’s correlation coefficients and if the DTD’s were first log transformed. The DTD in gait speed was not significantly correlated with any measure of cognitive function or affect.