Table 2.

Correlates of Reporting <30 min of Physical Activity in the Previous Week

Characteristic	Mean ERA-38 score (Standard Deviation)	Unadjusted Odds Ratio (95% Confidence Interval)	Adjusted Odds Ratio (95% Confidence Interval)*
ERA
Quintile 1 (highest ERA)	64.1 (10.2)	1.0 (ref)	1.0 (ref)
Quintile 2	46.8 (2.8)	3.0 (1.7 to 5.2)	2.8 (1.4 to 5.7)
Quintile 3	38.4 (2.3)	2.3 (1.3 to 3.9)	2.1 (1.4 to 3.3)
Quintile 4	30.2 (2.5)	2.2 (1.3 to 3.8)	1.8 (0.9 to 3.6)
Quintile 5 (lowest ERA)	18.2 (6.0)	3.4 (2.0 to 5.9)	2.6 (1.5 to 4.5)
Increased age (per 5 y interval)	NA	1.2 (1.1 to 1.4)	1.2 (1.0 to 1.3)
Female sex	NA	1.6 (1.1 to 2.4)	1.5 (1.0 to 2.4)
Physical health–related quality  of life†	NA	3.2 (1.9 to 5.4)	2.3 (1.6 to 3.3)
Mental health–related quality  of life†	NA	1.1 (0.7 to 1.8)	0.9 (0.5 to 1.7)
Number of comorbidities	NA	1.0 (1.0 to 1.1)	1.0 (0.8 to 1.1)
Self-efficacy‡	NA	0.6 (0.5 to 0.8)	0.8 (0.6 to 1.1)
Depressed mood	NA	1.4 (0.9 to 2.2)	1.5 (0.9 to 2.5)
Inability with ≥1 ADL	NA	1.7 (1.1 to 2.5)	1.4 (0.8 to 2.3)
Ethnicity (reference=white)
African American	NA	1.3 (0.8 to 2.1)	1.8 (1.1 to 2.9)
Latino	NA	1.0 (0.7 to 1.4)	1.1 (0.8 to 1.6)
Level of education	NA	0.9 (0.8 to 1.0)	0.9 (0.8 to 1.1)
Spanish language survey	NA	0.9 (0.5 to 1.6)	0.7 (0.5 to 1.2)

^*Model adjusted for clustering at the level of the senior center.

^†Lowest quintile compared with highest.

^‡Scores range from 1 to 4, with higher scores indicating greater self-efficacy.

ERA, expectations regarding aging; ADL, activities of daily living; NA, not applicable.