Sufficiently Important Difference (SID) Severity Benefit by Interview Method and Treatment Scenario Type
| Characteristic | Intake | Exit | Telephone | Intake + Telephone |
|---|---|---|---|---|
| CI = confidence interval. | ||||
| Note: data distributions tended to skew to the negative (6 of 8 had mean values of ≤ 50%). | ||||
| No. of interviews | 91 | 91 | 162 | 253 |
| Jackson score, mean (SD) | 9.7 (3.6) | 1.5 (2.6) | 9.6 (3.7) | 9.6 (3.7) |
| Unadjusted mean SID | ||||
| Overall (SD) | 0.40 (0.20) | 0.41 (0.16) | 0.40 (0.17) | 0.40 (0.18) |
| 95% CI | 0.38–0.44 | 0.36–0.44 | 0.37–0.43 | 0.38–0.42 |
| Accepting, regardless of severity benefit, % (SD) | 15.9 (0.37) | 17.6 (0.38) | 15.3 (0.36) | 15.5 (0.36) |
| Refusing, regardless of severity benefit, % (SD) | 12.6 (0.33) | 15.4 (0.36) | 14.5 (0.35) | 13.8 (0.35) |
| Vitamin | Herbal Extract | Lozenge | Antiviral | |
| Unadjusted mean SID | ||||
| Sick groups, No. (SD) | 0.25 (0.22) | 0.32 (0.24) | 0.47 (0.26) | 0.57 (0.30) |
| 95% CI | 0.23–0.27 | 0.30–0.34 | 0.43–0.51 | 0.53–0.61 |
| Accepting, regardless of severity benefit, % (SD) | 30.4 (46.1) | 15.4 (36.2) | 4.7 (21.3) | 4.7 (21.3) |
| Refusing, regardless of severity benefit, % (SD) | 3.1 (17.5) | 7.1 (25.8) | 14.6 (35.4) | 37.2 (48.4) |
| Group and Jackson score, adjusted SID | ||||
| Sick groups (SD) | 0.23 (0.22) | 0.31 (0.38) | 0.49 (0.45) | 0.63 (0.50) |
| 95% CI | 0.19–0.27 | 0.27–0.35 | 0.43–0.55 | 0.56–0.69 |