Table 1. Determinants of getting vaccinated with and without monetary incentive.

Predictors	Getting vaccinated without monetary incentive		Getting vaccinated for monetary incentive only
	OR	95% CI	OR	95% CI
(Constant)	0.06	0.006–0.648	1.13	0.146–8.715
Experimental manipulation: legal incentive (Baseline: no legal incentive)	1.01	0.577–1.755	0.62	0.362–1.059
Age	1.01	0.984–1.027	0.98	0.959–0.999
Gender: female (Baseline: male)	0.63	0.347–1.129	0.79	0.442–1.402
Financial worries	1.02	0.896–1.156	1.02	0.913–1.156
Confidence	2.32	1.942–2.771	1.49	1.257–1.769
Complacency	0.55	0.451–0.683	0.81	0.688–0.957
Calculation	0.80	0.677–0.935	0.99	0.851–1.159
Constraints	1.09	0.879–1.358	1.06	0.894–1.289
Collective responsibility	1.51	1.259–1.804	0.99	0.851–1.151

Results of the multinomial logistic regression analysis (Cox & Snell’s R² = .51, Nagelkerke’s R² = .61). Both groups were compared to participants not willing to get vaccinated regardless of payment. Results were further controlled for household size and income, education, and migration background (for complete results, see S2 Table). Bold values denote significant predictors with p < .05.