Table 2.

Spearman Correlations between Pittsburgh Fatigability Scale (PFS) Mental scores and continuous covariate measures: MrOS (N=1,670)

	1	2	3	4	5	6	7	8	9	10	11
1. PFS Mental scores
2. Conscientiousness	−0.19**
3. Optimism	−0.20**	0.30**
4. Goal Reengagement	−0.05*	0.19**	0.30**
5. Goal Disengagement	0.02	−0.10**	−0.07*	0.02
6. Age	0.13**	−0.05*	−0.11**	−0.09*	−0.00
7. Cognitive Functiona	−0.09*	0.17**	0.21**	0.10**	−0.04	−0.23**
8. Global Sleep Qualityb	0.23**	−0.12**	−0.18**	−0.10**	0.00	0.04	−0.01
9. Depressive Symptomsc	0.31**	−0.21**	−0.36**	−0.27**	0.01	0.19**	−0.13**	0.31**
10. Physical Activityd	−0.19**	0.12**	0.11**	0.11**	−0.07*	−0.24**	0.14**	−0.10**	−0.30**
11. Body mass index	0.03	−0.07*	−0.01	0.01	0.04	−0.10**	−0.02	0.06*	0.06	−0.10**

^aCognitive function was measured with the Teng Mini Mental Scale (0-100)

^bMeasured using the Pittsburgh Sleep Quality Index (PSQI)

^cMeasured with the Geriatric Depression Scale

^dPhysical Activity Scale for the Elderly (PASE) score

^*p≤.01

^**p≤.0001