Table 1.
Characteristics of the study participants according to their apolipoprotein ε-4 (APOE-ε4) carrier status
| Non-carriers (N=116) | Carriers (N=21) | Total | Test statisticsa | Effect sizea | p a | |
|---|---|---|---|---|---|---|
| Gender, female, n (%) | 69 (59.5) | 13 (61.9) | 82 (59.9) | 0.04b | 0.02c | 0.835 |
| Age (years), mean (SD) | 59.01 (6.00) | 60.38 (6.73) | 59.22 (6.11) | −0.95d | −0.21e | 0.346 |
| Educational years, mean (SD) | 12.30 (4.10) | 11.33 (4.04) | 12.15 (4.10) | 0.99c | 0.24e | 0.323 |
| Marital status | 0.46b | 0.06d | 0.550 | |||
| Married | 92 (79.3) | 18 (85.7) | 110 (80.3) | |||
| Widowed/divorced/separated | 24 (20.7) | 3 (14.3) | 27 (19.7) | |||
| Employment | 0.36b | 0.05d | 0.547 | |||
| Employed | 58 (50.0) | 9 (42.9) | 67 (48.9) | |||
| Unemployed | 58 (50.0) | 12 (57.1) | 70 (51.1) | |||
| Apolipoprotein genotype, n | NA | NA | NA | |||
| ε2/ε3 | 16 | 0 | 16 | |||
| ε3/ε3 | 100 | 0 | 100 | |||
| ε3/ε4 | 0 | 21 | 21 | |||
| ACE score (0–10) | 1.16 (2.23) | 1.86 (2.99) | 1.26 (2.36) | 0.99c | −0.04e | 0.323 |
| QIDS-SR score (0–27) | 7.17 (5.07) | 8.71 (5.43) | 7.41 (5.15) | −1.27c | −0.29e | 0.207 |
NA=not applicable; ACE=adverse childhood experiences; QIDS-SR=Quick Inventory of Depressive Symptomatology-Self Rating.
a
Comparison between non-carriers and carriers.
b
Chi-square test analysis.
c
Φ analysis.
d
t-statistics analysis.
e
Cohen's d analysis.