Cefoperazone sodium/sulbactam sodium vs piperacillin sodium/tazobactam sodium for treatment of respiratory tract infection in elderly patients

Table 1 Comparison of time to symptom relief between the two groups (mean ± SD, d)

Group	n	Time to recovery of white blood cells	Time to recovery of body temperature	Time to disappearance of cough and expectoration	Time to disappearance of rales
Study	37	6.79 ± 2.09	4.15 ± 1.08	6.19 ± 1.56	6.68 ± 1.43
Control	37	8.89 ± 2.32	5.81 ± 1.33	8.77 ± 2.11	8.69 ± 2.12
t		4.091	5.894	5.981	4.781
P value		< 0.001	< 0.001	< 0.001	< 0.001