Table 1.
Descriptive data for stress and immune measures
| Initial (n = 113)
|
4-months (n = 91)
|
8-months (n = 91)
|
12-months (n = 86)
|
18-months (n = 81)
|
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M | SD | M | SD | M | SD | M | SD | M | SD | |
| PSS | 18.1 | 6.9 | 15.4 | 7.0 | 14.5 | 6.6 | 14.6 | 6.5 | 14.8 | 6.9 |
| POMS | 31.2 | 32.1 | 23.3 | 30.9 | 19.9 | 32.7 | 19.0 | 30.7 | 15.8 | 30.1 |
| NKCC | 34.9 | 15.6 | 37.6 | 18.7 | 40.7 | 16.2 | 42.8 | 15.9 | 48.7 | 17.9 |
| Con A | 0.18 | 0.12 | 0.16 | 0.12 | 0.18 | 0.10 | 0.14 | 0.11 | 0.21 | 0.16 |
| PHA | 0.28 | 0.15 | 0.22 | 0.14 | 0.25 | 0.14 | 0.20 | 0.13 | 0.30 | 0.19 |
Note: PSS, Perceived Stress Scale; POMS, Profile of Mood States; NKCC, natural killer cell cytotoxicity (lytic units); Con A, concanavalin A (optical density at 5 μg/mL); and PHA, phytohemaggluttinin (optical density at 5 μg/mL).