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Table 3 Details of performed analyses

From: Duration of orthodontic treatment with fixed appliances in adolescents and adults: a systematic review with meta-analysis

Treatment

Analysis

Studies

(patients)

MD

(95% CI)

P value

I2

(95% CI)

tau2

(95% CI)

95% prediction

Complete treatment (conventional appliances)a

Original

7

(1150)

− 0.79

(− 4.18, 2.61)

0.65

92%

(77%, 99%)

17.05

(5.19, 134.34)

− 12.30, 10.72

Sensitivity; omitting Shim 2011

6

(1010)

0.39

(− 0.65, 1.42)

0.47

0%

(0%, 98%)

0

(0, 73.07)

− 1.08, 1.86

Alignment of displaced canine

Original

1

(30)

3.79

(1.42, 6.16)

0.002

–

–

–

Distalization of 1st molar

Original

1

(51)

0.06

(− 1.66, 1.78)

0.95

–

–

–

Retraction of canine

Original

1

(18)

2.02

(− 0.49, 4.53)

0.12

–

–

–

  1. MD mean difference, CI confidence interval
  2. aOriginal analysis gives a very heterogeneous picture, which is probably incompatible with synthesis of the studies; the sensitivity analysis probably gives a more stable image and should be preferred