Potential Explanatory Factors of Sufficiently Important Difference (SID) by Treatment Scenario
| Vitamin | Herbal | Lozenge | Antiviral | |||||
|---|---|---|---|---|---|---|---|---|
| Factor | β (SD) | P Value | β (SD) | P Value | β (SD) | P Value | β (SD) | P Value |
| Note: Results of multivariate regression analysis of associations of SID with covariates (potential explanatory factors). | ||||||||
| Intercept | 0.27 (0.13) | .032 | 0.49 (0.13) | <.001 | 0.23 (0.16) | .137 | 0.45 (0.18) | .012 |
| Female | −0.05 (0.03) | .198 | 0.04 (0.04) | .292 | 0.09 (0.04) | .037 | 0.08 (0.05) | .112 |
| Smoking status | ||||||||
| Never | — | — | — | — | — | — | — | — |
| Cigarettes, >5/d | 0.00 (0.05) | .925 | −0.01 (0.05) | .813 | 0.08 (0.06) | .227 | −0.11 (0.07) | .106 |
| Cigarettes, <5/d | −0.02 (0.05) | .758 | −0.10 (0.06) | .092 | 0.04 (0.07) | .586 | −0.08 (0.08) | .312 |
| Past | −0.03 (0.06) | .634 | 0.02 (0.06) | .814 | 0.05 (0.08) | .494 | −0.06 (0.09) | .476 |
| Ethnicity | ||||||||
| White | — | — | — | — | — | — | — | — |
| Other | −0.08 (0.08) | .318 | −0.10 (0.08) | .244 | 0.01 (0.10) | .895 | −0.01 (0.11) | .943 |
| African American | −0.08 (0.09) | .365 | −0.04 (0.09) | .704 | 0.03 (0.11) | .822 | 0.02 (0.13) | .877 |
| Hispanic | −0.03 (0.13) | .803 | −0.16 (0.14) | .238 | 0.11 (0.17) | .499 | 0.05 (0.19) | .783 |
| Asian | −0.14 (0.17) | .415 | −0.10 (0.18) | .569 | 0.01 (0.21) | .961 | 0.24 (0.24) | .318 |
| Education level | ||||||||
| <High school degree | — | — | — | — | — | — | — | — |
| High school degree | −0.22 (0.08) | .007 | −0.08 (0.09) | .348 | −0.02 (0.10) | .882 | 0.08 (0.11) | .504 |
| Some college | −0.15 (0.08) | .071 | −0.07 (0.09) | .417 | −0.03 (0.11) | .809 | 0.15 (0.12) | .217 |
| College degree | −0.21 (0.06) | .018 | −0.13 (0.09) | .175 | −0.08 (0.11) | .471 | 0.04 (0.13) | .749 |
| ≥ Graduate school | −0.15 (0.09) | .121 | −0.10 (0.10) | .301 | −0.06 (0.12) | .593 | 0.09 (0.13) | .482 |
| Annual income | ||||||||
| <$15,000 | — | — | — | — | — | — | — | — |
| $15,000–<$25,000 | 0.10 (0.10) | .339 | −0.07 (0.11) | .521 | 0.04 (0.13) | .789 | 0.15 (0.15) | .299 |
| $25,000–<$50,000 | 0.14 (0.10) | .160 | −0.03 (0.10) | .772 | 0.10 (0.12) | .431 | 0.18 (0.14) | .192 |
| $50,000–<$75,000 | 0.12 (0.10) | .198 | −0.11 (0.10) | .274 | 0.04 (0.12) | .726 | 0.20 (0.14) | .153 |
| $75,000–<$100,000 | 0.08 (0.10) | .440 | −0.14 (0.11) | .204 | 0.13 (0.13) | .303 | 0.13 (0.14) | .356 |
| ≥ $100,000 | 0.13 (0.10) | .191 | −0.15 (0.10) | .158 | 0.08 (0.12) | .545 | 0.16 (0.14) | .257 |
| Jackson score | 0.00 (0.00) | .679 | 0.00 (0.00) | .779 | 0.00 (0.01) | .850 | 0.00 (0.01) | .565 |