Table 2.

Adjusted Association of Stopping to Rest with Mobility Disability at Follow-up.

Variable	Model 1	Model 2	Model 3	Model 4	Model 5*	Model 6*	Model 7*
Rest Stop Status
REST	5.4 (2.7, 10.9)	2.5 (1.1, 5.5)	4.3 (2.1, 9.0)	2.6 (1.2, 5.9)	3.7 (1.8, 7.7)	5.0 (2.5, 10.1)	2.1 (0.9, 4.9)
NO-REST (Ref)
400-meter walking time, minutes		1.5 (1.3, 1.8)		1.4 (1.1, 1.6)			1.3 (1.1, 1.6)
SPPB, score			0.6 (0.5, 0.7)	0.7 (0.5, 0.8)			0.7 (0.5, 0.9)
Limited in walking a mile
Missing (n=64)					2.9 (0.8, 10.2)		1.7 (0.4, 6.6)
Limited a lot					5.7 (2.1, 15.3)		3.6 (1.3, 10.4)
Not limited (Ref)
Walking efficacy 5 laps					0.4 (0.2, 0.8)		0.5 (0.2, 1.0)
Lower limb arthritis						0.9 (0.4, 2.0)	1.2 (0.5, 2.6)
BMI						1.0 (1.0, 1.1)	1.0 (1.0, 1.1)

Note: Results are presented as odds ratios (95% confidence interval). Association of stopping to rest with mobility disability is in the full model (Model 7) adjusted for age, sex, clinic site, 400-meter walking time, Short Physical Performance Battery (SPPB) score, limitation in walking 1 mile, self-efficacy in walking 5 laps of the 400 meter walk (100 m), lower limb arthritis and Body Mass Index (BMI). Separate models are adjusted as follows: 1. Age, sex, clinic site (individual estimates for these not shown any of the models). 2. Model 1 + 400-meter walking time. 3. Model 1 + SPPB. 4. Model 2 + SPPB. 5. Model 1 + limited in walking 1 mile and walking efficacy 5 laps. 6. Model 1 + lower limb arthritis and BMI. 7. Full model. REST and NO-REST denote groups of participants stopping to rest or not during the 400-meter walk test. SPPB denotes Short Physical Performance Battery.

^*Measures of walking efficacy and lower limb arthritis each had one missing participant (see Table 1) who were excluded from the models.