Table 1. Descriptive statistics for sample, presented by high and low arousal positive affect (PA) and negative affect (NA).
| Overall N=315 |
PA High Arousal N=79 |
PA Low Arousal N=79 |
NA High Arousal N=79 |
NA Low Arousal N=80 |
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| N | (%) | N | (%) | N | (%) | N | (%) | N | (%) | |
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| Male | 85 | 27.0 | 24 | 30.4 | 24 | 30.4 | 12 | 15.2 | 18 | 22.5 |
| Race/ethnicity | ||||||||||
| White | 150 | 47.6 | 34 | 43.0 | 40 | 50.6 | 48 | 60.8 | 36 | 45.0 |
| Black | 33 | 10.5 | 11 | 13.9 | 10 | 12.7 | 7 | 8.9 | 10 | 12.5 |
| Asian/Pacific Islander | 18 | 5.7 | 5 | 6.3 | 2 | 2.5 | 2 | 2.5 | 4 | 5.0 |
| Latino | 59 | 18.7 | 19 | 24.1 | 17 | 21.5 | 6 | 7.6 | 9 | 11.3 |
| Multi-ethnic/ multi-racial | 38 | 12.1 | 8 | 10.1 | 8 | 10.1 | 11 | 13.9 | 12 | 15.0 |
| Other race/ethnicity | 17 | 5.4 | 2 | 2.5 | 2 | 2.5 | 5 | 6.3 | 9 | 11.3 |
| Regular nicotine use | 17 | 5.4 | 1 | 1.3 | 2 | 2.5 | 4 | 5.1 | 6 | 7.5 |
| Oral contraceptive use | 26 | 8.3 | 7 | 8.9 | 5 | 6.3 | 15 | 19.0 | 13 | 16.3 |
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| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
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| Average hours of sleep | 7.150 | .90 | 7.125 | 1.01 | 7.316 | .94 | 6.998 | .83 | 6.954 | .93 |
| Neuroticism score | 11.840 | 61.0 | 11.34 | 4.44 | 9.843 | 5.18 | 13.700 | 3.22 | 13.984 | 2.95 |
| Positive Affect | ||||||||||
| Active | 1.045 | .47 | 1.599 | .35 | 1.372 | .49 | .983 | .42 | 0.984 | .45 |
| Alert | 1.352 | .61 | 2.068 | .31 | 1.768 | .53 | 1.382 | .54 | 1.239 | .61 |
| Happy | 1.612 | .56 | 1.982 | .51 | 2.249 | .34 | 1.456 | .41 | 1.417 | .48 |
| Cheerful | 1.106 | .62 | 1.612 | .59 | 1.799 | .49 | .972 | .51 | 0.966 | .54 |
| Relaxed | 1.432 | .57 | 1.714 | .58 | 2.052 | .44 | 1.241 | .46 | 1.217 | .52 |
| Negative Affect | ||||||||||
| Nervous | 0.422 | .47 | .377 | .45 | .308 | .43 | 0.993 | .53 | 0.737 | .62 |
| Frustrated | 0.777 | .51 | .688 | .55 | .533 | .43 | 1.375 | .40 | 1.148 | .53 |
| Worried | 0.623 | .54 | .501 | .53 | .402 | .49 | 1.328 | .44 | 1.040 | .59 |
| Irritable | 0.705 | .53 | .593 | .53 | .494 | .44 | 1.294 | .48 | 1.055 | .55 |
| Stressed | 0.928 | .68 | .803 | .68 | .581 | .57 | 1.710 | .52 | 1.478 | .65 |
| Sad | 0.368 | .44 | .306 | .44 | .234 | .37 | 0.721 | .51 | 0.955 | .44 |
| Lonely | 0.382 | .51 | .301 | .44 | .249 | .46 | 0.755 | .62 | 1.053 | .54 |
| Cortisol parameters | ||||||||||
| Wakeup cortisol | .417 | .21 | .435 | .23 | .414 | .25 | .402 | .19 | .399 | .18 |
| Bedtime cortisol | .107 | .15 | .097 | .13 | .118 | .23 | .133 | .23 | .144 | .22 |
| Cortisol awakening response (CAR) | .160 | .29 | .103 | .31 | .157 | .29 | .164 | .30 | .170 | .30 |
| Cortisol slope | -.107 | .05 | -.115 | .05 | -.107 | .05 | -.104 | .06 | -.094 | .06 |
Note. Raw cortisol values (μg/dl) and high/low positive and negative affect groups representing the highest quartile are presented for descriptive purposes only. Log transformed cortisol values and continuous affect measures are used in all analyses.