. Author manuscript; available in PMC: 2010 Jul 1.

Published in final edited form as: Exp Aging Res. 2009 Jul–Sep;35(3):317–326. doi: 10.1080/03610730902922119

Table 2.

Correlations between letter fluency measures, DRS scores, age and education

	LF 1 minute	LF 2 minutes	LF difference

	r	r	r
Age	.072	.086	.060
Education	.355^**	.389^**	.340^**
DRS Total	.382^**	.517^**	.539^**
DRS Attention	.107	.152	.195
DRS I/P	.479^**	.575^**	.533^**
DRS Construction	.224	.233	.213
DRS Conceptualization	.217	.308^*	.338^**
DRS Memory	.046	.197	.292^*

p ≤ .05

^**

p ≤.01

DRS denotes Dementia Rating Scale. LF denotes letter fluency; LF 1 minute = total number of words generated in the first minute of administration; LF 2 minutes = total number of words generated in two minutes of administration; LF difference = difference between number of words generated in 1 vs. 2 minutes of administration. I/P denotes Initiation/Perseveration.