Table 3.

Logistic multilevel hierarchical regression model with participation in the MTC as the dependent variable

Variables	Response trait	OR1	95%-CI2
Highest education level achieved	No school education	1.93	0.74–5.31
	Lower secondary school education (Ref.)	1.00
	Intermediate secondary school education	1.74	0.75–3.97
	Entrance certificate for a university of applied sciences / University entrance certificate	1.12	0.54–2.34
Age	18–39	0.39	0.10–3.15
	40–49	0.69	0.30–1.56
	50–59 (Ref.)	1.00
	60–69	0.80	0.38–1.69
	≥70	0.93	0.42–2.08
Health literacy	Inadequate	0.31	0.11–0.93
	Problematic	0.85	0.47–1.56
	Sufficient (Ref.)	1.00
Living with partner	No	1.00
	Yes	0.92	0.48–1.75
Native language	German	1.00
	Other	1.89	0.49–7.23
Health insurance status	Statutory (Ref.)	1.00
	Private	0.74	0.26–2.12
	Statutory with additional private insurance	0.95	0.39–2.27
UICC stage	Stage 0 / I (Ref.)	1.00
	Stage II	0.83	0.45–1.53
	Stage III / IV	0.39	0.13–1.18
n patients		863
n breast cancer centers		43
ICC3 (ICC null model)		0.161 (0.149)

¹Standardized odds ratios (OR)

²95%-confidence intervals (95%-CI)

³Intraclass correlation coefficient (ICC)

Significant results in bold (p < 0.05)