Table 4. Generalized linear model coefficients of index of multiple deprivation ranking (IMD Rank), ethnic category, age and interaction terms of deprivation ranking and ethnic category with length of stay as the dependent variable.

	Coefficient	Standard Error	Z-value	p
(Intercept)	4.203 x 10-1	9.684 x 10-2	4.34	<0.001
IMD Rank	-4.168 x 10-6	9.467 x 10-6	-0.44	0.660
Ethnicity-Asian (East)	1.899 x 10-1	2.599 x 10-1	0.731	0.465
Ethnicity-Asian (Other)	-2.797 x 10-1	1.871 x 10-1	-1.495	0.135
Ethnicity-Asian (South)	3.431 x 10-1	9.867 x 10-2	3.478	<0.001
Ethnicity-Caribbean	1.007 x 10-1	1.272 x 10-1	0.791	0.429
Ethnicity-Caucasian	1.709 x 10-1	9.615 x 10-2	1.778	0.075
Ethnicity-Mixed	-1.471 x 10-1	2.141 x 10-1	-0.687	0.492
Ethnicity-Other	3.472 x 10-1	1.133 x 10-1	3.064	0.002
Ethnicity-Unknown	7.501 x 10-2	1.088 x 10-1	0.689	0.491
Sex (Male)	-3.605 x 10-2	1.651 x 10-2	-2.183	0.029
Age	2.329 x 10-2	4.441 x 10-4	52.448	<0.001
IMD Rank x Asian (East)	-2.139 x 10-6	1.48 x 10-5	-0.144	0.885
IMD Rank x Asian (Other)	4.891 x 10-6	1.633 x 10-5	0.3	0.765
IMD Rank x Asian (South)	2.751 x 10-6	9.682 x 10-6	2.841	0.005
IMD Rank x Caribbean	-8.689 x 10-8	1.209 x 10-6	-0.007	0.994
IMD Rank x Caucasian	-5.77 x 10-6	9.512 x 10-6	-0.607	0.544
IMD Rank x Mixed	4.06 x 10-5	1.563 x 10-5	2.597	0.009
IMD Rank x Other	-1.775 x 10-5	1.116 x 10-5	-1.591	0.112
IMD Rank x Unknown	-5.962 x 10-6	9.999 x 10-6	-0.596	0.551
(Note: coefficients and standard errors are very small as length of stay is a numerically low value).