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Table 1 Baseline age (year) and gender of the sample

From: Effects of laser-assisted cosmetic smile lift gingivectomy on postoperative bleeding and pain in fixed orthodontic patients: a controlled clinical trial

Group Laser Control Total
Sex Male Female Male Female Male Female
Number 5 10 7 8 12 18
Mean age (year) 20.3 21.9 21.3 21.3 20.9 21.6
Standard deviation 3.4 3.3 3.6 3.4 3.4 3.3
Minimum 17 19 18 18 17 18
Maximum 25 29 28 28 28 29
95% CI upper limit 16.0 19.5 17.9 18.5 18.7 20.0
95% CI lower limit 24.6 24.3 24.6 24.2 23.0 23.3
  1. CI, confidence interval.