Table 1.
Characteristics of the experimental (tree or ragweed pollen antigen-specific IgE positive status) and control (IgE negative status) groups are presented
| Characteristic | All patients (n = 94) | IgE positive (n = 41) | IgE negative (n = 53) | p-value |
|---|---|---|---|---|
| Age, years, mean (SD) | 43.8 (10.4) | 39.9 (9.7) | 46.8 (9.9) | 0.001 |
| Gender, male, n (%) | 40 (42.6) | 19 (46.3) | 21 (39.6) | 0.52 |
| Race, n (%) | 0.62 | |||
| Caucasian | 30 (31.9) | 14 (34.2) | 16 (30.2) | |
| African American | 61 (64.9) | 25 (61.0) | 36 (67.9) | |
| Other | 3 (3.2) | 2 (4.9) | 1 (1.9) | |
| Diagnosis, n (%) | 0.21 | |||
| Major depression | 55 (58.5) | 25 (45.5) | 30 (54.5) | |
| Bipolar I disorder | 39 (41.5) | 16 (41.0) | 23 (59.0) | |
| Order of visit, n (%) | 0.045 | |||
| First visit during low pollen season | 81 (86.2) | 32 (34.0) | 49 (52.1) | |
| First visit during high pollen season | 13 (13.8) | 9 (9.6) | 4 (4.3) | |
| Medications, n (%) | ||||
| Mood stabilizers | 33 (35.0) | 12 (29.3) | 21 (39.6) | 0.3 |
| Antidepressants | 72 (76.6) | 27 (65.9) | 45 (84.9) | 0.03 |
| Antipsychotic medications | 23 (24.5) | 8 (19.5) | 15 (28.3) | 0.33 |
| Anxiolytic medications | 20 (21.3) | 8 (19.5) | 12 (22.6) | 0.71 |
| Hypnotic medications | 26 (27.7) | 7 (17.1) | 19 (35.9) | 0.044 |
| Antihistamines | 10 (10.6) | 5 (12.2) | 5 (9.4) | 0.67 |
| Thyroid hormone | 14 (14.9) | 3 (7.3) | 11 (20.8) | 0.07 |
| Stimulants | 7 (7.5) | 0 (0) | 7 (13.2) | 0.016 |
| Opioid (pain control) | 4 (4.3) | 2 (4.9) | 2 (3.8) | 0.8 |
| Others | 46 (49.0) | 17 (41.5) | 29 (54.7) | 0.2 |