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Table 8 Confidence intervals in pain

From: Low‐level laser therapy using laser diode 940 nm in the mandibular impacted third molar surgery: double-blind randomized clinical trial

  Mean ± SD 95% CI
Upper limit Lower limit
Laser 2.901 ± 0.453 3.815 1.986
Placebo 0.427 ± 1.77 5.283 3.370