Table 3 Bivariate correlations between frailty, functional difficulty, gender, and covariates

Sample 1 [Low income; n = 704]

1. Frailty

1

.371**

.109**

.332**

.258**

2. Functional difficulty

1

.124**

.402**

.392**

3. Gender [ref – men]

1

0.056

.184**

4. Chronic disease status [ref – none]

1

.423**

5. Age [yrs]

1

Sample 2 [Higher income; n = 510]

1. Frailty

1

.535**

.103*

.436**

.409**

2. Functional difficulty

1

-0.038

.579**

.592**

3. Gender [ref – men]

1

0.012

-0.05

4. Chronic disease status [ref – none]

1

.560**

5. Age [yrs]

1