Table 4.
Results of binomial logistic regression model predicting amyotrophic lateral sclerosis ice bucket challenge participation.
| Predictora | B (SE) | Δχ2 (df) | Odds ratio (95% CI) |
| Constant | 0.05 (0.23) | N/Ab | N/A |
| Age groupc | −0.26 (0.30) | 0.7 (1) | 0.78 (0.43-1.40) |
| Experiential attitude | 0.66 (0.16) | 20.4 (1)** | 1.94 (1.44-2.69) |
| Instrumental attitude | −0.25 (0.13) | 4.0 (1) | 0.78 (0.60-1.00) |
| Injunctive norm | 0.28 (0.18) | 2.4 (1) | 1.33 (0.93-1.91) |
| Descriptive norm | 0.61 (0.20) | 9.6 (1)* | 1.84 (1.25-2.79) |
| Perceived control | −0.05 (0.25) | 0.1 (1) | 0.95 (0.58-1.56) |
| Self-efficacy | 0.15 (0.20) | 0.6 (1) | 1.16 (0.79-1.72) |
| Experiential attitude × value of experiential attitude | −0.15 (0.14) | 1.1 (1) | 0.86 (0.65-1.13) |
| Instrumental attitude × value of instrumental attitude | 0.05 (0.07) | 0.6 (1) | 1.05 (0.93-1.20) |
| Injunctive norm × motivation to comply | 0.06 (0.14) | 0.2 (1) | 1.06 (0.80-1.40) |
| Descriptive norm × motivation to comply | −0.24 (0.14) | 3.0 (1) | 0.79 (0.60-1.03) |
aModel χ211=151.05; n=318; R2L=0.34; null −2 Log likelihood=440.63; model 2 Log likelihood with predictors=289.58.
bN/A: not applicable.
cAge group was a dummy variable where 0=under 18 years old and 1=from 18 to 35 years old.
*P<.01; **P<.001.