Neural networks and hospital length of stay: an application to support healthcare management with national benchmarks and thresholds

Ippoliti, Roberto; Falavigna, Greta; Zanelli, Cristian; Bellini, Roberta; Numico, Gianmauro

doi:10.1186/s12962-021-00322-3

Cost Effectiveness and Resource Allocation

Table 11 Correlation matrix

From: Neural networks and hospital length of stay: an application to support healthcare management with national benchmarks and thresholds

Variables	(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)	(15)	(16)	(17)	(18)	(19)
Sex⁽¹⁾	1
Afternoon⁽²⁾	− 0.034	1
	(0.002)
Night⁽³⁾	− 0.033	− 0.460	1
	(0.002)	(0.000)
Morning⁽⁴⁾	0.063	− 0.683	− 0.335	1
	(0.000)	(0.000)	(0.000)
Monday⁽⁵⁾	0.010	− 0.004	− 0.001	0.005	1
	(0.345)	(0.751)	(0.905)	(0.663)
Tuesday⁽⁶⁾	0.009	− 0.008	− 0.059	0.057	− 0.178	1
	(0.426)	(0.465)	(0.000)	(0.000)	(0.000)
Wednesday⁽⁷⁾	− 0.003	− 0.003	− 0.034	0.031	− 0.176	− 0.193	1
	(0.807)	(0.821)	(0.002)	(0.005)	(0.000)	(0.000)
Thursday⁽⁸⁾	− 0.003	− 0.026	− 0.005	0.032	− 0.174	− 0.191	− 0.189	1
	(0.770)	(0.016)	(0.650)	(0.004)	(0.000)	(0.000)	(0.000)
Friday⁽⁹⁾	0.000	0.014	− 0.017	− 0.001	− 0.177	− 0.194	− 0.192	− 0.190	1
	(0.995)	(0.205)	(0.123)	(0.939)	(0.000)	(0.000)	(0.000)	(0.000)
Saturday⁽¹⁰⁾	− 0.012	0.018	0.084	− 0.088	− 0.146	− 0.160	− 0.158	− 0.157	− 0.160	1
	(0.262)	(0.100)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)
Sunday⁽¹¹⁾	− 0.002	0.012	0.053	− 0.057	− 0.135	− 0.148	− 0.147	− 0.145	− 0.148	− 0.122	1
	(0.831)	(0.257)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)
Planned⁽¹²⁾	0.061	− 0.255	− 0.207	0.441	0.015	0.066	0.049	0.053	0.021	− 0.132	− 0.107	1
	(0.000)	(0.000)	(0.000)	(0.000)	(0.183)	(0.000)	(0.000)	(0.000)	(0.057)	(0.000)	(0.000)
Urgent—direct⁽¹³⁾	0.035	− 0.008	− 0.059	0.057	0.019	0.013	− 0.006	0.010	0.041	− 0.031	− 0.058	− 0.180	1
	(0.001)	(0.467)	(0.000)	(0.000)	(0.087)	(0.233)	(0.601)	(0.379)	(0.000)	(0.004)	(0.000)	(0.000)
Urgent—ER⁽¹⁴⁾	− 0.076	0.216	0.218	− 0.408	− 0.026	− 0.062	− 0.034	− 0.051	− 0.045	0.132	0.124	− 0.690	− 0.576	1
	(0.000)	(0.000)	(0.000)	(0.000)	(0.016)	(0.000)	(0.002)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)
Cancer⁽¹⁵⁾	0.017	− 0.009	− 0.077	0.072	0.029	0.015	− 0.001	0.010	0.008	− 0.036	− 0.036	0.144	0.132	− 0.213	1
	(0.120)	(0.434)	(0.000)	(0.000)	(0.007)	(0.162)	(0.962)	(0.372)	(0.438)	(0.001)	(0.001)	(0.000)	(0.000)	(0.000)
18–40 years⁽¹⁶⁾	− 0.008	0.011	0.001	− 0.012	− 0.001	0.008	− 0.009	0.002	0.014	− 0.015	− 0.001	− 0.039	0.076	− 0.022	− 0.011	1
	(0.483)	(0.3109	(0.938)	(0.254)	(0.910)	(0.493)	(0.414)	(0.865)	(0.195)	(0.180)	(0.935)	(0.000)	(0.000)	(0.040)	(0.326)
41–65 years⁽¹⁷⁾	0.096	− 0.044	− 0.033	0.074	0.002	0.021	− 0.012	− 0.008	0.010	− 0.002	− 0.014	0.089	0.135	− 0.171	0.110	− 0.127	1
	(0.000)	(0.000)	(0.003)	(0.000)	(0.852)	(0.054)	(0.257)	(0.486)	(0.368)	(0.842)	(0.215)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)
66–75 years⁽¹⁸⁾	0.090	− 0.029	− 0.030	0.055	0.009	0.003	0.019	0.005	0.007	− 0.022	− 0.028	0.116	0.025	− 0.115	0.067	− 0.118	− 0.302	1
	(0.000)	(0.008)	(0.006)	(0.000)	(0.386)	(0.812)	(0.085)	(0.621)	(0.517)	(0.040)	(0.010)	(0.000)	(0.023)	(0.000)	(0.000)	(0.000)	(0.000)
> 75 years⁽¹⁹⁾	− 0.154	0.057	0.053	− 0.104	− 0.009	− 0.023	− 0.001	0.001	− 0.020	0.027	0.035	− 0.155	− 0.169	0.252	− 0.146	− 0.217	− 0.558	− 0.517	1
	(0.000)	(0.000)	(0.000)	(0.000)	(0.407)	(0.032)	(0.918)	(0.905)	(0.063)	(0.015)	(0.001)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)	(0.000)

Pairwise correlation coefficients with significance level in parentheses

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