Table 3. Demographic information for participants in Study 2.
| Demographic factor
|
Exercise
|
Control
|
P value (two-tailed)
|
||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | t statistic | |||
| Study 2, randomized trial | K-bit (composite) | 115.09 | 6.95 | 113.07 | 7.08 | −0.37 | 0.76 |
| Education | 15.39 | 2.79 | 14.7 | 2.18 | −0.61 | 0.66 | |
| Hypertension | 0.35 | 0.49 | 0.27 | 0.92 | −0.43 | 0.72 | |
| Age | 67.85 | 6.74 | 66.72 | 4.56 | −0.38 | 0.74 | |
K-bit, group average IQ score; education, years of education; hypertension, proportion of participants who had been diagnosed with hypertensive disorder (high blood pressure); age, average age in years.