. 2018 Feb 21;18:132. doi: 10.1186/s12913-018-2913-4

Table 4.

Relationships between GP co-location and GP outcomes

Multilevel models (p < 0.05; p < 0.01; **p < 0.001)	Provision of technical procedures^a		Use of guidelines^a		Collaboration with different providers^a		Coordination with secondary care^a
Fixed part	Coeff.	S.E.	Coeff.	S.E.	Coeff.	S.E.	Coeff.	S.E.
Single-handed GP practice (ref)
- More GPs without other professionals	0.153***	0.023	0.021	0.013	0.033*	0.013	0.090***	0.024
- One GP with other professionals	0.146***	0.022	−0.003	0.012	0.106***	0.013	0.108***	0.022
- More GPs with other professionals	0.200***	0.021	−0.001	0.012	0.143***	0.012	0.080***	0.022
Random part / Variance in full model	Var.	S.E.	Var.	S.E.	Var.	S.E.	Var.	S.E.
Country level	0.415	0.100	0.012	0.003	0.023	0.006	0.028	0.007
GP level	0.182	0.003	0.053	0.001	0.057	0.001	0.184	0.003
Variance in empty model	Var.	S.E.	Var.	S.E.	Var.	S.E.	Var.	S.E.
Country level	0.452	0.110	0.014	0.004	0.025	0.006	0.029	0.007
GP level	0.201	0.003	0.054	0.001	0.060	0.001	0.186	0.003
Variance in model only with covariates	Var.	S.E.	Var.	S.E.	Var.	S.E.	Var.	S.E.
Country level	0.409	0.099	0.012	0.003	0.022	0.005	0.029	0.007
GP level	0.185	0.003	0.053	0.001	0.057	0.001	0.182	0.003

^aCovariates GP level: sex, age, urbanisation, involvement in disease management