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. 2011 Apr 26;4:41–53. doi: 10.2147/CCID.S10817

Table 3.

RCT of five antimicrobial treatment regimens for 18 weeks duration

Reference No of patients Acne severity Treatment Treatment difference for patient’s perception of improvement, % (95% CI) Odds ratio, (95% CI)
Ozolins et al21 oxytetracycline = 131 mild-moderate 500 mg oxytetracycline po bid (1) vs 2 vs 1 = −1.2 (−13.3–10.9) 0.95 (0.58–1.55)
minocycline = 130 100 mg minocycline po daily (2) vs 4 vs 1 = 11.1 (−0.7–22.9) 1.64 (0.98–2.74)
topical 5% BPO = 130 topical 5% BPO bid (3) vs 4 vs 2 = 12.3 (0.4–24.2) 1.74 (1.04–2.90)
topical 5% BPO + 3% topical 5% BPO + 3% 5 vs 4 = −3.5 (−15.2–8.2) 0.84 (0.50–1.42)
erythromycin = 127 topical erythromycin bid (4) vs 3 vs 1 = 5.0 (−7.0–17.0) 1.19 (0.72–1.96)
topical 2% erythromycin in AM + topical 5% BPO in PM (5) 3 vs 2 = 6.2 (−5.8–18.2) 1.26 (0.76–2.08)
topical 2% erythromycin + 5%
BPO = 131
3 vs 4 = −6.1 (−17.9–5.7) 0.72 (0.43–1.21)

Abbreviations: AM, morning; PM, evening; BPO, benzoyl peroxide; bid, twice daily; CI, Confidence interval; po, by mouth.