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Table 6  Comparison of treatment outcomes between the two groups

From: Should preoperative computed tomography be routine examination for cervicofacial space infections?

Study variables All Preoperative CT Non-preoperative CT T/χ2 P value
Reoperation, n (%)      
 Yes 16 (10.5) 6 (5.6) 10 (22.2) 7.73a 0.00*
 No 137 (89.5) 102 (94.4) 35 (77.8)   
Missed diagnosis, n (%)      
 Yes 27 (17.6) 11 (10.2) 16 (35.6) 14.07 0.00*
 No 126 (82.4) 97 (89.8) 29 (64.4)   
Days of symptom relief,
mean ± SD
2.61 ± 1.48 2.39 ± 1.34 3.13 ± 1.69 4.92 0.01*
Length of stay(days),
mean ± SD
11.35 ± 5.25 10.76 ± 4.94 12.76 ± 5.73 − 2.17 0.03*
Duration of surgery(mins),
mean ± SD
52.48 ± 28.86 48.04 ± 23.53 59.33 ± 28.46 − 2.54 0.01*
Total cost of hospitalization (¥),
mean ± SD
13147.65 ± 6829.33 12913.37 ± 6904.07 13709.91 ± 6689.21 − 0.66 0.51
Pearson χ2 test, continuity χ2 test and Student-t test were used for analysis
SD standard deviation
aContinuity χ2 test
*Statistically significant