Table 3.
Comparisons between case- and control-group members on “intensity” scores
| Measure | Observed mean,
(SD)
|
ANOVA | Adjusted mean*
|
ANCOVA | ||
|---|---|---|---|---|---|---|
| Case | Control | Case | Control | |||
| Early adulthood | ||||||
| Passive intensity | 59.28 (50.27) | 69.88 (55.71) | F(1, 549) = 4.85† | 62.23 | 68.43 | F(1, 544) = 1.48 |
| Intellectual intensity | 55.63 (40.36) | 68.79 (52.23) | F(1, 549) = 9.27‡ | 57.45 | 67.94 | F(1, 544) = 4.79† |
| Physical intensity | 32.06 (33.66) | 33.97 (34.58) | F(1, 549) = 0.39 | 31.18 | 34.50 | F(1, 544) = 0.99 |
| Middle adulthood | ||||||
| Passive intensity | 98.90 (68.82) | 101.89 (61.31) | F(1, 549) = 0.27 | 99.33 | 101.84 | F(1, 544) = 0.16 |
| Intellectual intensity | 68.06 (59.80) | 79.14 (55.66) | F(1, 549) = 4.71† | 68.15 | 79.21 | F(1, 544) = 3.82† |
| Physical intensity | 38.12 (38.13) | 40.80 (33.43) | F(1, 549) = 0.73 | 37.74 | 41.09 | F(1, 544) = 0.96 |
*
Adjusted means take into account the effects of covariates (year of birth, education, gender, and income adequacy) in the ANCOVAs.
†
P ≤ 0.05.
‡
P ≤ 0.01.