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Single-dose antibiotic treatment for symptomatic urinary tract infections in women: a meta-analysis of randomized
1Department of Internal Medicine B, Beilinson Medical Center, Petah Tiqva, Israel.
Abstract:
The efficacy of single-dose antibiotics for treatment of symptomatic urinary tract infections in women was compared to the efficacy of conventional therapy in 25 controlled studies. The combined results of these studies indicate that single-dose antibiotics are less effective than conventional therapy at 3-14 days post-treatment (odds ratio of 0.5, 95 per cent confidence interval (C.I.) 0.4-0.7), and at 4-6 weeks (odds ratio of 0.4, 95 per cent C.I. 0.3-0.6). Single-dose therapy did not perform better in patients with bacterial isolates sensitive to the drug used. The cure rate achieved by single-dose amoxicillin was significantly lower than that afforded by conventional therapy. The equal efficacy of single-dose and conventional trimethoprim/sulphamethoxazole treatment at 3-14 days post-treatment could not be ruled out with a 95 per cent certainty. However, conventional treatment achieved cure rates significantly higher than single-dose therapy at 4-6 weeks (odds ratio 0.48, 95 per cent C.I. 0.3-0.8). Side-effects were lower among patients given a single dose (odds ratio 0.5, 95 per cent C.I. 0.4-0.6). Although single-dose trimethoprim/sulphamethoxazole is less effective than a course of treatment, it causes fewer side-effects: the decision of whether to use a single-dose has to be decided by cost-benefit analysis in any specific health-care system.
Insights
Single-dose antibiotics are less effective for treating urinary tract infections in women compared to conventional therapy, with higher cure rates seen in longer treatment courses. However, single-dose regimens result in fewer side effects.
Area of Science:
- Infectious Diseases
- Pharmacology
- Women's Health
Background:
- Urinary tract infections (UTIs) are common in women.
- Treatment options include single-dose and conventional multi-day antibiotic regimens.
- Assessing the comparative efficacy and safety of these regimens is crucial for optimal patient care.
Purpose of the Study:
- To compare the efficacy of single-dose antibiotic therapy versus conventional therapy for symptomatic UTIs in women.
- To analyze cure rates at different post-treatment intervals (3-14 days and 4-6 weeks).
- To evaluate the safety profile, specifically the incidence of side-effects, for both treatment approaches.
Main Methods:
- A meta-analysis of 25 controlled studies was conducted.
- Efficacy was assessed by comparing cure rates between single-dose and conventional therapy groups.
- Statistical analysis included calculating odds ratios and 95% confidence intervals.
Main Results:
- Single-dose antibiotics showed lower efficacy than conventional therapy at both 3-14 days (OR 0.5, 95% CI 0.4-0.7) and 4-6 weeks (OR 0.4, 95% CI 0.3-0.6).
- This trend persisted even when bacterial isolates were sensitive to the prescribed drug.
- Single-dose regimens were associated with significantly fewer side-effects (OR 0.5, 95% CI 0.4-0.6).
Conclusions:
- Conventional antibiotic therapy is generally more effective for treating UTIs in women than single-dose regimens.
- While single-dose trimethoprim/sulphamethoxazole may be less effective, it offers a benefit of reduced side-effects.
- The choice between single-dose and conventional therapy should involve a cost-benefit analysis specific to the healthcare system.