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. 2021 Sep 13;4(9):e2121937. doi: 10.1001/jamanetworkopen.2021.21937

Table 4. Outcomes of Children and Adults With SS Who Had Undergone Surgery.

Domain and comparison data Standardized mean group differences Prevalence rates
Studies, No. Participants with SS, No. Hedges g (95% CI) P value I 2 τ N fs Studies, No. Participants with SS, No. Prevalence (95% CI) Studies, No. Participants with SS, No. OR (95% CI)a
Objective measures
General cognition
Peers 2 113 −0.12 (−0.57 to 0.33) .60 49.78 0.24 0 3 112 0.20 (0.11 to 0.34) NA NA NA
Normsb 9 299 0.01 (−0.26 to 0.27) .96 75.71 0.34 0
Motor functioning
Peers 3 131 0.18 (−0.41 to 0.05) .13 0.00 0.00 0 2 81 0.12 (0.03 to 0.36) NA NA NA
Norms 7 244 0.01 (−0.31 to 0.34) .93 83.10 0.40 0
Verbal abilities
Peers 3 122 −0.65 (−1.34 to 0.03) .06 74.77 0.52 7 3 84 0.15 (0.08 to 0.27) NA NA NA
Norms 7 266 0.23 (−0.01 to 0.47) .06 69.71 0.26 1
Visuospatial abilities
Peers 3 102 −0.07 (−0.32 to 0.17) .56 0.00 0.00 0 1 63 0.05 (0.02 to 0.14) 1 35 4.55 (0.21 to 98.63)
Norms 6 248 0.31 (0.18 to 0.44) <.001 0.00 0.00 3
Adaptive and social skills, norms 2 76 0.07 (−0.26 to 0.41) .67 48.57 0.17 0 1 63 0.03 (0.01 to 0.12) NA NA NA
Arithmetic
Peers 1 75 −0.21 (−0.48 to 0.06) .12 NA NA NA NA NA NA NA NA NA
Norms 1 10 −0.24 (−0.86 to 0.38) .45 NA NA NA NA NA NA NA NA NA
Attention
Peers 2 94 −0.40 (−1.08 to 0.29) .26 73.58 0.43 2 NA NA NA NA NA NA
Norms 1 38 −0.51 (−0.84 to −0.19) <.001 NA NA NA NA NA NA NA NA NA
Executive function, peers 1 75 −0.18 (−0.45 to 0.09) .19 NA NA NA NA NA NA NA NA NA
Global development, norms 2 76 0.34 (−0.09 to 0.76) .13 68.17 0.26 1 1 26 0.15 (0.06 to 0.35) NA NA NA
Learning difficulties NA NA NA NA NA NA NA 4 143 0.23 (0.11 to 0.41) 1 70 0.64 (0.35 to 1.17)
Memory
Shorter term
Peers 2 92 −0.20 (−0.45 to 0.05) .12 <.001 0.00 0 NA NA NA NA NA NA
Norms 2 51 −0.45 (−0.72 to −0.17) <.001 <.001 0.00 3 NA NA NA NA NA NA
Longer term, peers 1 74 −0.18 (−0.45 to 0.10) .20 NA NA NA NA NA NA NA NA NA
Processing speed, norms 2 48 −0.26 (−1.14 to 0.63) .57 79.89 0.58 1 NA NA NA NA NA NA
Subjective measures
Motor functioning NA NA NA NA NA NA NA 1 138 0.10 NA NA NA
Verbal abilities, peers 1 70 −0.01 (−0.31 to 0.28) .93 NA NA NA 1 138 0.09 NA NA NA
Adaptive and social skills, norms 1 75 0.15 (−0.08 to 0.38) .19 NA NA NA 1 140 0.12 NA NA NA
Attention, peers 1 76 −0.02 (−0.31 to 0.26) .87 NA NA NA NA NA NA NA NA NA
Behavior
Externalizing
Peers 2 83 −0.04 (−0.30 to 0.22) .76 0.00 0.00 0 1 94 0.26 (0.20 to 0.32) 1 76 1.48 (0.79 to 2.74)
Norms 3 192 −0.14 (−0.29 to 0.02) .08 13.45 0.05 0
Internalizing
Peers 2 83 −0.19 (−0.62 to 0.25) .40 24.24 .20 0 1 94 0.14 (0.10 to 0.20) 1 76 1.17 (0.65 to 2.09)
Norms 3 192 −0.07 (−0.21 to 0.07) .32 0.00 0.00 0
Overall
Peers 2 83 0.02 (−0.33 to 0.38) .91 13.13 0.14 0 1 94 0.22 (0.15 to 0.32) 1 76 1.52 (0.83 to 2.81)
Norms 1 75 0.17 (−0.15 to 0.49) .30 NA NA NA
Executive function
Peers 1 75 0.04 (−0.25 to 0.33) .79 NA NA NA NA NA NA NA NA NA
Norms 3 192 −0.40 (−0.66 to −0.14) <.001 68.20 0.19 3 NA NA NA NA NA NA
Memory: shorter term, norms 3 192 −0.39 (−0.63 to −0.15) <.001 62.22 0.17 3 NA NA NA NA NA NA
Quality of life, norms 1 5 1.29 (0.42 to 2.17) <.001 NA NA NA NA NA NA NA NA NA
Satisfaction with appearance, peers 1 40 −0.06 (−0.50 to 0.37) .78 NA NA NA NA NA NA NA NA NA
Self-concept, peers 1 7 −0.03 (−0.95 to 0.88) .94 NA NA NA NA NA NA NA NA NA

Abbreviations: NA, not applicable; Nfs, Orwin failsafe N; OR, odds ratio; SS, sagittal synostosis.

a

ORs are shown on a logarithmic scale.

b

Norms refers to comparisons against normative data for each measure.