Figure 1.

The association between organisational factors and superspell LOS, after accounting for patient case-mix. Organisational factors are adjusted for case-mix (age, sex, ASA classification, hip fracture type, pre-fracture residence and pre-fracture mobility) and mutually adjusted for all backward selected factors reported in Supplementary Table S2. Factors with P-value < 0.1 shown. N = 165,350. ED = emergency department. FTE = full time equivalent. op = operative. Rehab. = rehabilitation. T&O = Trauma and orthopaedic.