Table 4.

Factors associated with LOS^a

		Before including fixed effectsb				After including fixed effectsb
		Difference in LOSc	95 % Confidence Interval		P value	Difference in LOSc	95 % Confidence interval		P value
			Lower bound	Upper bound			Lowerbound	Upper bound
Time of presentation	Weekdayc	Reference				Reference
	Evening	−21.1	−26.4	−15.8	0.000	−13.1	18.1	−8.2	0.000
	Night	−25.2	−32.2	−18.1	0.000	−20.4	−27.0	−13.9	0.000
	Weekend day	−15.8	−22.5	−9.1	0.000	−11.0	−17.2	−4.7	0.001
Origin	Self referredc	Reference				Reference
	Referred by medical professionals	57.3	52.0	62.5	0.000	32.9	27.7	38.2	0.000
	Referred via radiology	−14.9	−27.6	−2.2	0.022	−6.5	−18.7	5.6	0.293
Follow up	Hospital Admissionc	Reference				Reference
	Out patient Clinic	−63.8	−69.1	−58.6	0.000	−41.2	−46.6	−35.8	0.000
	PCP Follow-up	−72.2	−80.7	−63.7	0.000	−49.9	−58.3	−41.5	0.000
	No Follow-up	−71.3	−77.7	−65.2	0.000	−44.6	−51.0	−38.3	0.000

Legend. ^aResults from random coefficient regression modeling, all analysis included hospitals as random effect, ^bfixed effects are age, sex and trauma, ^cdifference in LOS compared to the reference category