Multivariable Sensitivity Analysis for Inclusion of Survey Completion Timestamp on 1-Month Vaccination Intention
| Alternative Dichotomization | Multivariable Odds Ratio (95% Confidence Interval, P Value)* | ||||||
|---|---|---|---|---|---|---|---|
| Concern† | Edu‡ | Health§ | Age | Sex (Men) | Influenza | Direct Interaction | Concern |
| – | – | – | 1.00 (0.95-1.06, .953) | 2.25 (1.89-2.68, <.001) | 2.20 (1.56-3.16, <.001) | 1.16 (0.99-1.35, .060) | 2.02 (1.74-2.35, <.001) |
| – | – | Alt | 1.00 (0.94-1.05, .903) | 2.26 (1.90–2.69, <.001) | 2.19 (1.56-3.15, <.001) | 1.17 (1.00 to 1.36, .045) | 2.00 (1.72-2.32, <.001) |
| – | Alt | – | 1.02 (0.97-1.08, .462) | 2.28 (1.91–2.71, <.001) | 2.20 (1.56-3.15, <.001) | 1.14 (0.98-1.33, .085) | 2.03 (1.74-2.36, <.001) |
| – | Alt | Alt | 1.02 (0.96-1.07, .546) | 2.28 (1.92-2.71, <.001) | 2.18 (1.55-3.13, <.001) | 1.15 (0.99-1.34, .066) | 2.00 (1.73-2.33, <.001) |
| Alt | – | – | 1.01 (0.96-1.07, .740) | 2.29 (1.92-2.73, <.001) | 2.22 (1.57-3.18, <.001) | 1.12 (0.96-1.30, .152) | 2.75 (2.26-3.35, <.001) |
| Alt | – | Alt | 1.00 (0.95-1.06, .865) | 2.29 (1.92-2.73, <.001) | 2.20 (1.56-3.17, <.001) | 1.13 (0.97-1.31, .121) | 2.72 (2.25-3.32, <.001) |
| Alt | Alt | – | 1.03 (0.98-1.09, .295) | 2.31 (1.94-2.75, <.001) | 2.22 (1.57-3.19, <.001) | 1.11 (0.95-1.29, .199) | 2.75 (2.27-3.35, <.001) |
| Alt | Alt | Alt | 1.03 (0.97-1.08, .353) | 2.32 (1.95-2.76, <.001) | 2.20 (1.56-3.17, <.001) | 1.11 (0.96-1.30, .165) | 2.73 (2.25-3.33, <.001) |
| Alternative Dichotomization | Multivariable Odds Ratio (95% Confidence Interval, P Value)* | ||||
|---|---|---|---|---|---|
| Concern† | Edu‡ | Health§ | Education | Health | Timestamp‖ |
| – | – | – | 1.29 (1.11–1.50, .001) | 0.84 (0.70–1.01, .067) | 0.99 (0.96-1.01, .246) |
| – | – | Alt | 1.31 (1.13-1.53, <.001) | 0.82 (0.52-1.27, .388) | 0.99 (0.96-1.01, .244) |
| – | Alt | – | 1.50 (1.19-1.90, <.001) | 0.84 (0.70–1.01, .067) | 0.98 (0.96-1.01, .184) |
| – | Alt | Alt | 1.54 (1.22-1.94, <.001) | 0.81 (0.51–1.24, .337) | 0.98 (0.96-1.01, .180) |
| Alt | – | – | 1.30 (1.11–1.52, <.001) | 0.86 (0.72-1.03, .102) | 0.98 (0.96-1.01, .198) |
| Alt | – | Alt | 1.32 (1.13-1.54, <.001) | 0.84 (0.53-1.29, .431) | 0.98 (0.96-1.01, .197) |
| Alt | Alt | – | 1.51 (1.20–1.91, <.001) | 0.86 (0.72-1.03, .103) | 0.98 (0.96-1.01, .149) |
| Alt | Alt | Alt | 1.55 (1.23-1.95, <.001) | 0.82 (0.52-1.26, .373) | 0.98 (0.96-1.01, .146) |
CI, confidence interval; Edu, educational attainment; Alt, alternative.
↵* Boldface text indicates P < .05.
↵† Concern about becoming infected with COVID-19. Concern was reported on a 5-point Likert scale (extremely, moderately, somewhat, slightly, not at all). The original (–) threshold divides between moderately/somewhat. The alternative threshold divides between somewhat/slightly.
↵‡ Educational attainment was reported on a 6-point Likert scale (some high school, high school graduate, some college, college graduate, Master's degree and Doctoral/Professional degree). The original (–) threshold divides between College graduate/Master's degree. The alternative threshold divides between some college/college graduate.
↵§ Self-reported health status was reported on a 5-point Likert scale (excellent, very good, good, fair, poor). The original threshold (–) divides between very good/good. The alternative threshold divides between good/fair.
↵‖ Measured in days.