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. 2021 Dec 31;2021(12):CD003453. doi: 10.1002/14651858.CD003453.pub2

Comparison 14. Schwarz appliance versus no active treatment (control).

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
14.1 Change in mandibular incisor crowding 1 28 Mean Difference (IV, Fixed, 95% CI) ‐2.14 [‐2.79, ‐1.49]
14.1.1 Change in mandibular incisor crowding 1 28 Mean Difference (IV, Fixed, 95% CI) ‐2.14 [‐2.79, ‐1.49]
14.2 Change in mandibular arch length 1 28 Mean Difference (IV, Fixed, 95% CI) 0.11 [‐0.46, 0.68]
14.2.1 Change in mandibular arch length 1 28 Mean Difference (IV, Fixed, 95% CI) 0.11 [‐0.46, 0.68]
14.3 Change in lower incisor to APog 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
14.3.1 Change in lower incisor to APog 1 28 Mean Difference (IV, Fixed, 95% CI) 0.39 [0.11, 0.67]
14.4 Change in upper incisor to SN 1 28 Mean Difference (IV, Fixed, 95% CI) 0.33 [‐2.26, 2.92]
14.4.1 Change in upper incisor to SN 1 28 Mean Difference (IV, Fixed, 95% CI) 0.33 [‐2.26, 2.92]