Table 4.

Comparison of Dual-task Performance between Walking While Reciting Alternate Letters of the Alphabet (WWR) and Walking While Counting Backwards by Sevens (WWC)

Outcome	Effect	Lower CI	Upper CI	p Value
WWR vs. WWC Velocity	−4.98 *	−6.94	−3.03	<.01
Age	−.68 *	−1.04	−.32	<.01
Gender	−.1.03	−7.29	5.23	.75
Race	−.60	−6.12	4.92	.83
Education	.52	−.48	1.52	.31
Disease Comorbidity	−2.03	−4.71	.64	.14
Gait Abnormality	−7.41 *	−14.22	−.60	.03
WWR vs. WWC Accuracy Ratio	<−.01	−.05	.04	.91
Age	<.01	−.00	.00	.58
Gender	−.01	−.06	.03	.57
Race	−.01	−.05	.03	.67
Education	−.01	−.01	.00	.10
Disease Comorbidity	−.01	−.03	.01	.51
Gait Abnormality	<.01	−.05	.05	.93

p values were calculated using linear mixed effects models, adjusting for age, gender, race, education (years), disease comorbidity, and gait abnormality.

^*p < .05