Table 3.
Random Effects Models for Cortisol Levels (β1) with Age as Predictor (β2) and with Individual Covariates (β3)
|
Mean Values (p values) |
Standard Deviations | Number | ||||||
|---|---|---|---|---|---|---|---|---|
| Predictor | β1* | β2* | β3* | σ1** | σ2** | σε** | Women | Observations |
| Age (48.4) | 1.51 (<0.0001) |
.004 (0.23) |
- | 0.18 | 0.02 | 0.36 | 132 | 5218 |
| Menopause- related factors | ||||||||
| Hot flash severity | 1.51 (<0.0001) |
0.006 (0.08) |
−0.02 (0.01) |
0.16 | 0.02. | 0.36 | 130 | 4465 |
| Estrone glucuronide (log10) (1.2) | 1.50 (<0.0001) |
0.004 (0.16) |
0.17 (<0.0001) |
0.18 | 0.02 | 0.36 | 132 | 5126 |
| FSH (log10) (1.1) | 1.50 (<0.0001) |
0.001 (0.75) |
0.07 <0.0001) |
0.17 | 0.02 | 0.36 | 132 | 5218 |
| Testosterone (log10) (1.3) | 1.51 (<0.0001) |
0.003 (0.30) |
0.35 <0.0001) |
0.18 | 0.02 | 0.35 | 132 | 5096 |
| Stress related factors | ||||||||
| Epinephrine (log10) (0.4) | 1.53 (<0.0001) |
0.002 (0.47) |
0.20 <0.0001) |
0.15 | 0.02 | 0.36 | 132 | 2086 |
| Norepinephrine (log10) (0.4) | 1.53 (<0.0001) |
0.003 (0.39) |
0.15 0.0001) |
0.16 | 0.01 | 0.37 | 132 | 2086 |
| Perceived stress | 1.50 (<.0001) |
<0.01 (.22) |
<.001 (.90) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Symptoms | ||||||||
| Depressed mood | 1.50 (<0.0001) |
0.004 (0.22) |
0.001 (0.94) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Awakening during night | 1.50 (<0.0001) |
0.004 (0.24) |
0.005 (0.56) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Early morning awakening | 1.50 (<0.0001) |
0.004 (0.22) |
−0.001 (0.88) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Problem going to sleep | 1.51 (<0.0001) |
0.004 (0.22) |
−0.02 (0.06) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Forgetfulness | 1.50 (<0.0001) |
0.004 (0.23) |
0.006 (0.60) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Problem concentrating | 1.50 (<0.0001) |
0.004 (0.22) |
0.008 (0.47) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Social factors | ||||||||
| Parenting (Number live births) | 1.50 (<0.0001) |
0.004 (0.25) |
0.004 (0.73) |
0.18 | 0.02 | 0.36 | 132 | 5218 |
| Social support | 1.46 (<0.0001) |
0.003 (.47) |
0.02 (.55) |
0.07 | 0.01 | 0.33 | 127 | 544 |
| Employed | 1.57 (<0.0001) |
0.003 (0.29) |
−0.07 (0.06) |
0.18 | 0.02 | 0.36 | 132 | 5218 |
| History sexual abuse | 1.52 (<0.0001) |
0.004 (0.22) |
−0.05 (0.16) |
0.18 | 0.02 | 0.36 | 132 | 5218 |
| Income adequacy | 1.42 (<0.0001) |
0.003 (0.49) |
0.03 (0.17) |
0.08 | 0.01 | 0.33 | 127 | 587 |
| Role burden | 1.45 (<0.001) |
<0.001 (0.41) |
0.02 (0.49) |
0.09 | 0.14 | 0.33 | 127 | 590 |
| Health-related factors | ||||||||
| Depression score (CESD) | 1.53 (<.0001) |
.002 (0.50) |
−0.002 (0.16) |
0.08 | 0.01 | 0.33 | 127 | 589 |
| Perceived health | 1.46 (<0.0001) |
0.004 (0.26) |
0.01 (0.14) |
0.16 | 0.02 | 0.36 | 130 | 4465 |
| Physical appraisal | 1.46 (<.0001) |
.003 (0.47) |
.008 (0.44) |
0.08 | 0.01 | 0.33 | 127 | 590 |
| BMI (26.1) | 1.50 (<0.0001) |
0.004 (0.19) |
−0.002 (0.36) |
0.18 | 0.02 | 0.36 | 132 | 5218 |
| Smoker | 1.50 (<0.0001) |
0.004 (0.21) |
0.03 (0.54) |
0.18 | 0.02 | 0.36 | 132 | 5218 |
*
β1, β2, β3 are the fixed effects (group averages) for the intercept, slope and covariate.
**
σ1, σ2, σε are the random effects (variability) for the intercept, slope and residual error.