. Author manuscript; available in PMC: 2022 Sep 1.

Published in final edited form as: Eval Health Prof. 2020 Sep 14;44(3):235–244. doi: 10.1177/0163278720958186

Table 2.

Logistic Regression Analyses of Survey Response.

Response rate questions	Pairwise comparisons	After initial mailing		After second mailing		After final mailing
Response rate questions	Pairwise comparisons	Odds Ratio	95% CI	Odds Ratio	95% CI	Odds Ratio	95% CI
RRQ1	Group $5/$5 vs Group $10/$0	0.82	0.58–1.15	1.09	0.79–1.51	1.23	0.89–1.70
RRQ2	Group $5/$10 vs Group $10/$5	1.09	0.78–1.52	1.17	0.85–1.61	1.27	0.92–1.76
RRQ3	Group $5/$10 vs Group $5/$5	1.45^*	1.03–2.05	1.33⁺	0.96–1.84	1.44^*	1.05–2.00
RRQ4a	Group $10/$5 vs Group $10/$0	1.09	0.78–1.53	1.24	0.90–1.72	1.40^*	1.01–1.93
RRQ4b	Group $10/$10 vs Group $10/$0	1.39⁺	1.00–1.93	1.58^**	1.14–2.18	1.83^***	1.32–2.53
RRQ4c	Group $10/$10 vs Group $10/$5	1.27	0.92–1.76	1.27	0.92–1.75	1.31	0.95–1.81

Note.

⁺

p < .10;

p < .05;

^**

p < .01;

^***

p < .001.