Table 1.
Baseline characteristics of responders and non-responders to MBSR.
| Characteristics |
Responders (n = 11) Mean (S.D.) or n (%) |
Non-responders (n = 11) Mean (S.D.) or n (%) |
Test statistic | p-value |
|---|---|---|---|---|
| Age | 60.4 (14.5) range: 33–79 |
58.2 (10.2) range: 40–69 |
t = 0.409, 20df | 0.69 |
| BMI | 31.64 (4.178) | 31.09 (7.816) | t = 0.204, 20df | 0.84 |
| SEX | ||||
| Male | 9 (82%) | 9 (82%) | X2 = 0.0, 1df | 1.0 |
| Female | 2 (18%) | 2 (18%) | ||
| RACE | ||||
| White | 11 (100%) | 11 (100%) | X2 = 0.0, 1df | 1.0 |
| SERVICE ERA | ||||
| OEF/OIF | 2 (18%) | 1 (9%) | X2 = 2.41, 3df | 0.49 |
| Gulf War | 0 (0%) | 2 (18%) | ||
| Vietnam War | 7 (64%) | 6 (55%) | ||
| Other | 2 (18%) | 2 (18%) | ||
| SERVICE DURATION | ||||
| <1 year | 1 (9%) | 1 (9%) | X2 = 2.8, 3df | 0.42 |
| 1–2 years | 4 (36%) | 1 (9%) | ||
| 2–5 years | 3 (27%) | 6 (55%) | ||
| >5 years | 3 (27%) | 3 (27%) | ||
| Any Childhood Trauma (Y/N) | 4 (36%) | 2 (18%) | X2 = 0.92, 1df | 0.34 |
| Lifetime trauma (number events) | 9.0 (3.2) | 6.5 (3.2) | t = 1.78, 20df | 0.09 |
| PCL Total Score | 63.2 (7.3) | 61.5 (14.3) | t = 0.36, 20df | 0.36 |
| PCL Reexperiencing | 17.73 (3.6) | 17.64 (5.4) | t = 0.047, 20df | 0.96 |
| PCL Avoidance | 26.45 (3.01) | 25.91 (5.5) | t = 0.29, 20df | 0.77 |
| PCL Arousal | 19.0 (4.2) | 17.9 (4.9) | t = 0.56, 20df | 0.58 |
| PHQ9 number of symptoms endorsed | 13.5 (5.5) | 15.3 (5.8) | t = −0.71, 20df | 0.48 |
| Number of psychotropic medications | 1.4 (0.5) | 1.8 (0.9) | t = −1.494, 20df | 0.15 |
| Antidepressant user | 10 (91%) | 10 (91%) | X2 = 0.0, 1df | 1.0 |
| SSRI user | 7 (64%) | 6 (55%) | X2 = 0.19, 1df | 0.66 |
| SRI (SSRI or SNRI) user | 10 (91%) | 8 (73%) | X2 = 1.22, 1df | 0.27 |
| More than one antidepressant user | 6 (55%) | 6 (55%) | X2 = 0.0, 1df | 1.0 |
| SMOKING STATUS | ||||
| Never | 2 (18%) | 4 (36%) | X2 = 1.07, 2df | 0.59 |
| Current | 3 (27%) | 3 (27%) | ||
| Former | 6 (55%) | 4 (36%) | ||
BMI, Body Mass Index; OEF/OIF, Operation Enduring Freedom / Operation Iraqi Freedom; PCL, PTSD Checklist; PHQ9, Patient Health Questionnaire 9; SSRI, Selective Serotonin Reuptake Inhibitor; SNRI, Serotonin and norepinephrine reuptake inhibitor; X2, Pearson's chi-squared test; t, Student's t-test.