Table 2

Meta-regression analysis

Outcomes
SubgroupsLong-term complications (n=10)Any postoperative pain (n=23)Postoperative flare-up (n=8)
Pain-free vs painful teeth−0.33 (−1.47 to 1.14)0.15 (−0.50 to 0.80)1.10 (−2.44 to 4.63)
Vital vs non-vital teeth0.10 (−0.90 to 1.10)−0.02 (−0.60 to 0.58)−0.08 (−2.26 to 2.10)
Teeth with periapical lesions vs teeth without lesions−0.13 (−1.22 to 0.98)−1.18 (−2.91 to 0.55)0.79 (−0.87 to 2.46)
Calcium hydroxide medication vs no medicationNA0.11 (−0.27 to 0.50)−0.27 (−1.29 to 0.74)
  • LogRR and 95% CI are given to allow comparing relative effect estimates between subgroups of treatments.

  • N, number of studies; NA, not available (as all studies used calcium hydroxide).