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4 “...% CI, 0.91 to 1.20]), though statistical heterogeneity was present (I2=52%), and one trial found...”

5 “...% CI, 0.91 to 1.20]), though statistical heterogeneity was present (I2=52%), and one trial found...”

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10 “...BACKGROUND: In 2006, the U.S. Preventive Services Task Force (USPSTF) found insufficient evidence...”

11 “...BACKGROUND: In 2006, the U.S. Preventive Services Task Force (USPSTF) found insufficient evidence...”

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14 Subjects: “...Preventive Health Services...”

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18 “... in populations, settings, and outcomes, and substantial statistical heterogeneity. Statistical heterogeneity...”

19 “... for chlamydia in a good-quality trial did not statistically significantly reduce pelvic inflammatory disease...”

20 “... for chlamydia in a good-quality trial did not statistically significantly reduce pelvic inflammatory disease...”