Table 7: Poisson regression for length of stay per head injury in a motorcycle accident.

Variable Coefficienta Standard error value Intercept 2.0449*** 0.0265 <0.0001 Policy interactions −0.0114 0.0407 0.7797  Policy*Center −0.2175*** 0.0708 0.0021  Policy*South −0.2780*** 0.0567 <0.0001  Policy*East 0.3236* 0.1840 0.0785 Geographic locations  Center 0.0383 0.0555 0.4897  South −0.0161 0.0424 0.7036  East −0.2333 0.1538 0.1293  (ref.: north) Gender 0.0123 0.0238 0.6056 Age  Children −0.2245*** 0.0709 0.0015  Adult 15–24 −0.2330*** 0.0253 <0.0001  Elderly −0.0042 0.0471 0.9292  (ref.: adult 25–64) Rural/urban  City −0.1608*** 0.0567 0.0045  County administered −0.2153*** 0.0411 <0.0001  Town −0.0525 0.0388 0.1756  Village −0.0141 0.0375 0.7079  (ref.: special municipality)

a***Denotes significant at 0.01 level; **denotes significant at 0.05 level; *denotes significant at 0.1 level. bReference groups: north, female, adult 25–64, special municipality, Policy*North. Observations = 1,254.