Table 3.
Unadjusted associations with SCD assessed continuously via self-perceived cognitive function and SCD assessed categorically via endorsement of memory complaints (N = 491)
| Self-perceived cognitive function (standardised) | Memory complaints (binary) | |||||
|---|---|---|---|---|---|---|
| Univariable linear regression models | Univariable logistic regression models | |||||
| Explanatory variable | Coefficienta | 95% CI | p-value | Odds ratiob | 95% CI | p-value |
| Age (1 year) | 0.01 | −0.01 to 0.03 | 0.461 | 1.02 | 0.97 to 1.07 | 0.450 |
| Female (vs male) | 0.11 | −0.07 to 0.29 | 0.236 | 0.86 | 0.56 to 1.32 | 0.494 |
| Education (1 year) | 0.02 | −0.01 to 0.05 | 0.154 | 1.01 | 0.95 to 1.08 | 0.714 |
| Repetitive negative thinking (1 SD)c | −0.52 | − 0.59 to − 0.44 | < 0.001 | 1.78 | 1.43 to 2.21 | < 0.001 |
| Rumination (1 SD) | −0.39 | − 0.48 to − 0.31 | < 0.001 | 1.24 | 1.01 to 1.52 | 0.036 |
| Worry (1 SD) | −0.48 | −0.56 to − 0.40 | < 0.001 | 1.55 | 1.26 to 1.90 | < 0.001 |
| Purpose in life (1 SD) | 0.42 | 0.34 to 0.50 | < 0.001 | 0.66 | 0.56 to 0.84 | < 0.001 |
| Openness to experience (1 SD) | 0.11 | 0.02 to 0.20 | 0.017 | 1.02 | 0.83 to 1.25 | 0.873 |
| Conscientiousness (1 SD) | 0.27 | 0.18 to 0.35 | < 0.001 | 0.74 | 0.60 to 0.90 | 0.003 |
| Extraversion (1 SD) | 0.26 | 0.17 to 0.34 | < 0.001 | 0.76 | 0.61 to 0.94 | 0.011 |
| Agreeableness (1 SD) | 0.21 | 0.12 to 0.29 | < 0.001 | 0.78 | 0.63 to 0.96 | 0.017 |
| Neuroticism (1 SD) | −0.41 | −0.50 to −0.33 | < 0.001 | 1.54 | 1.25 to 1.90 | < 0.001 |
| Regular meditation practice (vs no practice) | −0.22 | −0.54 to 0.09 | 0.159 | 1.08 | 0.53 to 2.22 | 0.829 |
Abbreviations: SCD subjective cognitive decline, SD standard deviation, CI confidence interval
aIn the univariable linear regression models, the coefficient for the standardised continuous explanatory variables (indicated in parentheses by 1 SD) is equal to the Pearson’s correlation coefficient
bIn the univariable logistic regression models, for binary explanatory variables (sex, regular meditation practice), the estimate describes the odds of memory complaints in one group relative to the reference category (indicated in parentheses). For continuous explanatory variables, the estimate reflects the expected increase in the odds of memory complaints for a one unit increase in the explanatory variable
cn = 490