Table 3. Comparison of the number and intensity of night sweats before and after the intervention between two groups.
| Variable | Evaluation time | Evening primrose oil (n = 80) | Placebo (n = 83) | χ2 | P value | |
|---|---|---|---|---|---|---|
| Frequent night sweats | Before intervention | Without | 0 (0) | 1 (1.2) | 0.18a | |
| Low | 5 (6.3) | 1 (1.2) | ||||
| Moderate | 27 (33.8) | 34 (41.0) | ||||
| High | 48 (60.0) | 47 (56.6) | ||||
| After intervention | Without | 22 (27.5) | 0 (0) | 79.93 | < 0.001 | |
| Low | 35 (43.8) | 6 (7.2) | ||||
| Moderate | 22 (27.5) | 44 (53.0) | ||||
| High | 1 (1.3) | 33 (39.8) | ||||
| Intensity of night sweats | Before intervention | Mild | 7 (8.8) | 10 (12.0) | 1.41 | 0.49 |
| Moderate | 53 (66.3) | 58 (96.9) | ||||
| Severe | 20 (25.0) | 15 (18.1) | ||||
| After intervention | Mild | 38 (47.5) | 8 (9.6) | 33.46 | < 0.001 | |
| Moderate | 40 (50.0) | 60 (72.3) | ||||
| Severe | 2 (2.5) | 15 (18.1) |
Data are presented as number (%).
In follow-up studies, lost to follow up is unavoidable and because the number of lost was not considerable, the causes were not investigated.
aFisher exact test and the rest: chi-square test.