Table 4. Bivariate associations between independent variables and hot flash score at EOT adjusted by baseline hot flash score (N = 285).
| Independent Variables | n* | Missing n (%) | Mean change in hot flash score at EOT* | P-value |
|---|---|---|---|---|
| Expectancy question 1 (1–9) | 6.8 (1.6)** | 1 (0.4) | -0.3 (-1.1 to 0.4) | 0.42 |
| Expectancy question 2 (1–9) | 6.9 (1.7)** | 2 (0.7) | -0.3 (-1.0 to 0.4) | 0.35 |
| Credibility score (composite) (1–9) | 6.8 (1.5)** | - | 0.02 (-0.8 to 0.8) | 0.97 |
| Hot flash duration (years) | 5.1 (4.6)** | 40 (14.0) | 0.1 (-0.16 to 0.38) | 0.42 |
| Anxiety score | 7.6 (4.2)** | 35 (12.3) | -0.2 (-0.5 to 0.1) | 0.30 |
| Practitioner gender | 9 (3.2) | 0.96 | ||
| Female practitioners | 98 | - | ||
| Male practitioners compared to female practitioners | 178 | 0.03 (-1.3 to 1.4) | ||
| Perceived study arm allocation | 5 (1.8) | 0.89 | ||
| “Sham acupuncture” | 13 | - | ||
| “Real acupuncture” compared to “sham acupuncture” | 91 | -1.3 (-6.7 to 4.1) | ||
| “Not sure” compared to “sham acupuncture” | 176 | -1.0 (-6.3 to 4.3) | ||
| Smoking status | 37 (13.0) | 0.02 | ||
| Never smoker | 116 | - | ||
| Regular smoker compared to never smoker | 21 | -8.1 (-13.2 to -3.0) | ||
| Occasional smoker compared to never smoker | 8 | -0.9 (-7.7 to 5.8) | ||
| Previously smoked compared to never smoked | 103 | -0.7 (-3.3 to 2.0) | ||
| Education | 38 (13.3) | 0.61 | ||
| Completed primary school or high school | 93 | - | ||
| Completed a degree compared with primary school/high school | 109 | -1.4 (-4.3 to 1.4) | ||
| Completed postgraduate education compared with primary school/high school | 45 | -1.00 (-4.6 to 2.6) |
*number of participants with a HF score and response for the independent variable listed. There were 37 (13%) participants with missing HF score at end of treatment.
**Mean (SD)
EOT = end of treatment