Outcome variable: Sign-ups to the ODR (0 did not sign up and 1 signed up) | ||
---|---|---|
Message variants (reference: control message) | Unadjusted odds ratio [95% confidence interval] | Absolute effect (Percentage of sign-ups) (control group – 2.3%) |
Social norms | 1.255*** [1.196,1.317] | 2.8% |
Social norms and image | 0.941* [0.894,0.990] | 2.1% |
Social norms and logo | 1.274*** [1.214,1.336] | 2.9% |
Loss frame | 1.333*** [1.271,1.397] | 3.0% |
Gain frame | 1.250*** [1.192,1.311] | 2.8% |
Reciprocity | 1.380*** [1.317,1.447] | 3.1% |
Cognitive dissonance | 1.232*** [1.174,1.293] | 2.8% |
Observations | 1,085,322 | 1,085,322 |