Table 2.
Correlations among study variables at time 1
| Memory (P) | Spatial visual (BD) | Knowledge (I) | Speed (DS) | Cognitive activity | Depression (CES-D) | Social contact | Physical activity | |
|---|---|---|---|---|---|---|---|---|
| Memory (PR) | − | |||||||
| Spatial visual (BD) | .45** | − | ||||||
| Knowledge (I) | .54** | .39** | − | |||||
| Speed (DS) | .52** | .62** | .49** | − | ||||
| Cognitive activity | .33** | .37** | .41** | .41** | − | |||
| Depression (CES-D) | .02 | −.14** | .002 | .00 | −.08 | − | ||
| Social contact | .16** | .18** | .13** | .23** | .24** | −23** | − | |
| Physical activity | .16** | .12* | .10* | .20** | .27** | −.14** | .12* | − |
I Information, DS Digit-symbol, BD Block design, Spatial Visual Spatial visualization, PR Prose recall, CES-D Center for Epidemiological Studies-depression scale
* P > 0.05
** P > 0.01