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Table 2 BVRT performance by groups (Mann-Whitney test)

From: Developmental delay in early childhood is associated with visual-constructive skills at school age in a Brazilian cohort

  Groups U Z p η 2
DD (N = 31) TD (N = 25)
Mdn (Range) Mdn (Range)
BVRT—copy task
 Correct score 8.72 (5–10) 10 80.5 −5.427 < .001 .53
 Error score 1.39 (0–5) 0 80.5 −5.427 < .001 .53
 Distortions 1.22 (0–4) 0 80.5 −5.428 < .001 .53
 Omissions 0 0 356.5 0 1 0
 Perseverations 0 0 356.5 0 1 0
 Rotations 0 0 356.5 0 1 0
 Misplacements 0.11 (0–1) 0 138.0 −4.598 < .001 .38
 Time (minutes) 7.36 (4–12) 9.87 (6–23) 157.0 −3.666 < .001 .24
BVRT—memory task
 Correct score 5.44 (4–8) 5.67 (3–8) 175.5 −3.268 .001 .19
 Error score 7.22 (4–11) 4.83 (4–5) 156.0 −3.621 < .001 .23
 Distortions 4.06 (1–7) 3.44 (0–8) 157.5 −3.591 .002 .23
 Omissions 1.44 (0–6) 0.22 (0–2) 118.5 −4.316 < .001 .33
 Perseverations 1.55 (0–3) 0.33 (0–3) 50.5 −5.538 < .001 .55
 Rotations 0.56 (0–1) 0.39 (0–1) 212.0 −2.625 .009 .12
 Misplacements 0.83 (0–3) 0.56 (0–1) 189.0 −3.037 .002 .16
 Time (minutes) 9.61 (6–16) 9.63 (6–18) 231.0 −2.270 .023 .09
  1. BVRT Benton Visual Retention Test, DD developmentally delayed group, TD typically developed group, Mdn median