Table 3.

Regression models predicting cancer research registry enrollment link clicking (N = 329)

	Narrative transportation			Intent to seek information about a CRR			Direct effects model			Total effects model
Predictor variable	B (SE)	t	95% CI	B (SE)	t	95% CI	B (SE)	Z	95% CI	B (SE)	Z	95% CI
Age	− 0.01 (0.00)*	− 2.15	− 0.02, − 0.00	− 0.01 (0.01)*	− 2.16	− .28, − 0.00	0.05 (0.02)**	3.11	.02, .08	.02 (.01)	1.74	−.00, .05
Race	− 0.10 (0.17)	− 0.57	− 0.43, 0.24	0.18 (0.28)	0.66	− 0.37, 0.74	− 0.41 (0.65)	− 0.64	− 1.68, 0.85	− 0.35 (0.60)	− 0.59	− 1.52, 0.82
Education	0.32 (0.10)***	3.40	0.14, 0.51	0.02 (0.18)	0.11	− 0.34, 0.37	0.60 (0.41)	1.47	− .20, 1.40	0.43 (0.33)	1.31	− .22, 1.09
Income	0.07 (0.10)	0.67	− 0.13, 0.26	0.36 (0.18)	1.93	− 0.01, 0.72	− 0.09 (0.41)	− 0.22	− .89, 0.71	0.39 (0.35)	1.10	− 0.30, 1.07
Sex	0.05 (0.18)	0.30	− 0.30, 0.41	− 0.60 (0.33)	− 1.85	− 1.25, 0.04	− 1.15 (0.83)	− 1.39	− 2.78, 0.48	− 1.52 (.82)	− 1.86	− 3.12, 0.08
Colorectal cancer	0.15 (0.17)	0.88	− 0.19, 0.49	− 0.33 (0.33)	− 1.01	− 0.98, 0.31	− 2.31 (0.91)*	− 2.54	− 4.09, − 0.53	− 2.19 (.91)*	− 2.41	− 3.96, − 0.41
Lung cancer	0.18 (0.17)	1.03	− 0.16, 0.51	0.09 (0.36)	0.24	− 0.63, 0.80	− 1.54 (0.89)	− 1.74	− 3.28, 0.20	− 1.03 (.83)	− 1.24	− 2.66, 0.60
Prostate cancer	− 0.04 (0.21)	− 0.21	− 0.45, 0.36	− 0.67 (0.36)	− 1.85	− 1.37, 0.04	− 2.00 (0.93)*	− 2.15	− 3.83, − 0.17	− 2.17 (.88)*	− 2.46	− 3.91, 0.44
Ask CTT	− 0.06 (0.20)	− 0.30	− 0.44, 0.33	− 0.44 (0.49)	− 0.89	− 1.40, 0.53	− 0.22 (0.99)	− 0.22	− 2.17, 1.73	− .46 (.87)	− 0.52	− 2.17, 1.26
Nationality	0.04 (0.12)	0.36	− 0.19, 0.27	0.21 (0.21)	1.00	− 0.20, 0.62	− 0.58 (0.50)	− 1.16	− 1.56, .401	− .22 (.42)	− 0.51	− 1.05, 0.61
Cancer status	0.18 (0.11)	1.61	− 0.04, 0.40	0.60 (0.20)**	2.99	0.21, 0.99	0.45 (0.43)	1.05	− 0.39, 1.29	1.05 (.36)**	2.88	0.34, 1.76
Patient identification	0.70 (0.04)***	19.84	0.63, 0.77	− 0.10 (0.09)	− 1.06	− 0.28, 0.09	− 0.05 (0.23)	− 0.20	− 0.50, 0.40	0.27 (.12)*	2.25	0.03, 0.50
Narrative transportation				0.64 (0.11)***	5.71	0.42, 0.86	− 0.04 (0.28)	− 0.15	− 0.59, 01.50
Intent to seek information about a CRR							1.15 (0.19)***	6.08	0.78, 1.52

Cases with missing values across the variables were not included in the analysis (n = 11); both patients with cancer and patients in remission were included, with cancer status controlled for in the model; the total effects model depicts the predictive power of patient identification with covariates included, and the direct effects model depicts the predictive power of patient identification with covariates and mediators included. Tests of indirect mediation effects are included in text

Ask CCT, patient previously asked to participate in a cancer clinical trial; CRR, cancer research registry

p ≤ 0.05;

^**p ≤ 0.01;

^***p ≤ .001