Table 4.
Mean Cortisol Values (in nmol/L) by Demographic Variables
| Sample 1 (SD) | Sample 2 (SD) | Sample 3 (SD) | Sample 4 (SD) | AUCG (SD) | Early Morning Response (SD) | Change from Sample 1 to Sample 4 (SD) | Diurnal Decline | |
|---|---|---|---|---|---|---|---|---|
| TOTAL | 8.15 (5.58) | 8.78 (9.02) | 5.31 (5.04) | 2.57 (4.91) | 1069.28 (848.02) | 36.06% (146.48%) | 5.93 (5.70) | 6.33(7.11) |
| Mininum | 0.63 | 0.68 | 0.16 | 0.11 | 77.47 | −78.28% | −7.58 | −9.72 |
| Maximum | 38.99 | 80.44 | 50.60 | 57.23 | 7431.58 | 850.24% | 35.37 | 38.62 |
| Gender: | ||||||||
| Men | 9.42 (6.19)* | 9.86(11.20) | 5.33 (4.21) | 3.25 (6.83) | 1085.67 (707.15) | 24.13% (153.37%) | 6.88 (6.21)† | 6.91 (7.75) |
| Women | 7.26 (4.89)* | 8.04 (6.93) | 5.34 (5.66) | 2.06 (2.56) | 1070.16 (953.78) | 44.18% (142.02%) | 5.31 (5.21)† | 6.00 (6.67) |
| Income: | ||||||||
| Lower Quartile | 7.52 (7.11) | 6.67 (4.15)† | 4.74 (3.79) | 2.47 (2.10) | 832.31 (419.48)* | 18.21% (81.14%) | 5.05 (7.09) | 4.54 (5.28) |
| Upper Quartile | 7.83 (5.09) | 10.00 (7.56)† | 4.94 (7.64) | 2.73 (3.98) | 1171.21 (808.04)* | 70.12% (175.71%) | 5.11 (5.32) | 6.89 (7.76) |
| Age: | ||||||||
| Quartile 1 | 6.68 (4.00)* | 7.10 (5.30) | 4.95 (3.18) | 2.04 (1.83) | 891.73 (469.23) | 41.34% (130.68%) | 4.64 (3.76) | 5.25 (5.75) |
| Quartile 2 | 8.48 (4.00) | 8.29 (7.13) | 4.90 (2.61) | 2.73 (4.07) | 1177.25 (1234.33) | 64.08% (207.21%) | 5.74 (7.97) | 5.96(7.41) |
| Quartile 3 | 8.10 (4.72) | 8.53 (8.23) | 5.65 (5.78) | 1.87 (1.84) | 985.33 (722.96) | 33.37% (156.28%) | 6.23 (5.25) | 6.30 (7.48) |
| Quartile 4 | 9.73 (5.82)* | 10.51 (8.15) | 6.54 (7.59) | 2.28 (2.00) | 1279.29 (826.22) | 22.42% (101.64%) | 7.45 (4.92) | 8.27 (7.61) |
| On Reservation: | ||||||||
| Yes | 8.24 (5.67) | 8.16 (6.92) | 5.51 (5.82) | 2.20 (2.58) | 1068.96 (899.48) | 33.11% (144.09%) | 6.04 (5.72) | 6.07 (6.61) |
| No | 8.52 (5.48) | 10.58 (8.69) | 5.74 (3.00) | 2.33 (2.55) | 1165.56 (700.34) | 61.63% (173.50%) | 6.19 (5.59) | 7.41 (8.65) |
| Smoking: | ||||||||
| Non-Smokers | 8.19 (5.13) | 8.14 (7.48) | 6.23 (7.50) | 1.96 (2.24) | 1068.44 (820.56) | 19.74% (119.50%) | 6.23 (4.59) | 6.91 (6.01) |
| Occasional Smokers | 7.66 (4.46) | 9.53 (9.34) | 4.46 (2.38) | 3.26 (3.52) | 1288.17 (1524.86) | 54.68% (168.36%) | 4.40 (5.57) | 6.29 (9.12) |
| Daily Smokers | 8.79 (6.41) | 8.96 (6.63) | 5.29 (3.42) | 2.13 (2.46) | 1032.44 (513.86) | 49.33% (169.62%) | 6.66 (6.51) | 6.65 (6.78) |
| Drinking: | ||||||||
| Non-Drinkers | 8.26 (4.59) | 9.10 (7.77) | 5.37 (4.27) | 2.07 (1.97) | 1141.12 (949.40) | 34.97% (147.76%) | 6.19 (4.46) | 6.88 (7.27) |
| Drinking in Past Month | 8.45 (7.04) | 8.15 (6.73) | 5.89 (6.77) | 2.48 (3.34) | 1017.31 (690.88) | 48.26% (157.61%) | 5.97 (7.30) | 5.83 (6.94) |
†
p < .10;
*
p < .05;
**
p < .01;
***
p < .001