Table 1.
Distribution of baseline covariates in the total sample and by adversity count and psychological health in GUTS1 Saliva Substudy participants (n=916)
| Adversity Count | Psychological Health | ||
|---|---|---|---|
| Covariates | N (%) | Mean (SD) or Correlation | Mean (SD) or Correlation |
|
| |||
| Baseline Variables | |||
| Age (Mean (SD)) | 25.33 (1.6) | 0.01 | 0.03 |
| Sex | |||
| Female | 640 (69.9) | 1.70 (1.4) | −0.05 (1.0) |
| Male | 276 (30.1) | 1.61 (1.3) | 0.12 (0.9) |
| Race | |||
| White | 843 (92.3) | 1.63 (1.3) | 0.01 (1.0) |
| Non-White | 70 (7.7) | 2.20 (1.4) | −0.10 (1.0) |
| Sexual Orientation | |||
| Heterosexual | 623 (68.6) | 1.58 (1.3) | 0.13 (0.9) |
| Not heterosexual | 285 (31.4) | 1.90 (1.3) | −0.27 (1.1) |
| Father’s Education | |||
| Some High School or HS Grad | 118 (13.8) | 1.97 (1.5) | −0.05 (1.1) |
| 2-year College | 148 (17.3) | 1.51 (1.2) | −0.01 (1.0) |
| 4-year College or Grad School | 588 (68.9) | 1.57 (1.3) | 0.01 (1.0) |
| BMI (Mean (SD)) | 24.68 (4.9) | 0.06 | −0.07 |
| Day Saliva Samples are Obtained Hormonal Contraception | |||
| Any hormonal contraception use | 327 (35.7) | 1.64 (1.3) | −0.02 (1.1) |
| No hormonal contraception use | 588 (64.3) | 1.69 (1.3) | 0.01 (1.0) |
| Sleep Duration, hours (Mean (SD)) | 7.50 (1.3) | −0.04 | −0.02 |
| Waking Time, hours past midnight (Mean (SD)) | 7.57 (1.6) | 0.04 | −0.10 |
| Smoking | |||
| Any smoking | 34 (3.7) | 1.71 (1.4) | −0.24 (1.0) |
| No smoking | 881 (96.3) | 1.67 (1.3) | 0.01 (1.0) |
| Vigorous Physical Activity | |||
| Any physical activity | 306 (33.9) | 1.53 (1.3) | 0.05 (1.0) |
| No physical activity | 596 (66.1) | 1.73 (1.4) | −0.03 (1.0) |
| Time to saliva sample, months (Mean (SD)) | 25.23 (9.0) | −0.25 | 0.03 |
Adversity count is the count of 7 potential psychosocial adversities experienced before age 18; psychological health is the sum of z-scores of: depression and anxiety symptoms (both inversed) and positive affect; higher scores indicate better functioning.
Time to saliva sample is the time in months between baseline (in 2010) and cortisol assessment (between 2011 and 2014).
p<.05 are bolded; p-values refer to T-tests for binary categorical covariates, F-statistics for categorical covariates (>2 categories), and Pearson correlations for continuous covariates and mean adversity count and psychological health.