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.