Table 2. Demographic information for participants in Study 1.
| Demographic factor
|
High fit
|
Low fit
|
P value (two-tailed)
|
||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | t statistic | |||
| Study 1, cross-sectional | K-bit (composite) | 115.91 | 8.32 | 116.55 | 10.37 | −0.16 | 0.88 |
| Education | 13.50 | 2.58 | 13.14 | 2.97 | 1.29 | 0.21 | |
| Hypertension | 0.15 | 0.38 | 0.23 | 0.49 | −0.48 | 0.64 | |
| Age | 66.23 | 8.17 | 67.86 | 7.79 | −0.53 | 0.6 | |
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.