Table 7: The relationship between grade of open fracture and length of hospitalization.

LOS Open I % Open II % Open III-A % Open III B % Open III C % Total % UR χ2 P
< 1 week 291 58.2 318 54.2 145 35.3 30 16.5 21 26.9 815 46.4 31.534* < 0.0001
1 - 2 weeks 95 19.0 102 17.4 75 18.2 22 12.1 8 10.3 302 17.2 4.132 0.389
2 - 6 weeks 78 15.6 111 18.9 117 28.5 69 37.9 23 29.5 379 21.6 11.173 0.025
6 - 12 weeks 22 4.4 42 7.2 44 10.7 40 22.0 18 23.1 166 9.4 22.478* 0.0002
> 12 weeks 2 0.4 4 0.7 14 3.4 9 4.9 4 5.1 33 1.9 5.333 0.255
Total 500 587 411 182 78 1758 100.0
χ2 102* 86.49* 35.474* 32.915* 25.158*
P < 0.00001 < 0.00001 < 0.00001 < 0.00001 0.00005
Mean LOS 11.6 ± 21 (days)
5 (1 - 394) days
14.7 ± 26.6 days
6 (1 - 422) days
23.9 ± 38.5 days 34 ± 29.3 days 31.5 ± 29.8 days F-test = 182.43532 P < 0.00001
Median 12 (1 - 395) days 27 (2 - 153) days 21 (7 - 114) days

Mean LOS Types 1& II Open fractures = 13.3 ± 24.2 days

Mean LOS Types III A, B & C Open fractures = 27.5 ± 35.5 days

t - test = 9.96 (95% CI = 11.4 - 17.0) P < 0.0001

LOS = Length of Hospitalization, (* = statistically significant), CI = Confidence interval.