Table 3 Results of the post-hoc tests regarding the relationship between surgery status and ADHD symptomatology (ANCOVA)

Control (a)

2.487 (0.361)

p _{a vs. b} = 0.640

p _{a vs. c} = 0.004

p _{b vs. c} = 0.013

2.027 (0.412)

p _{a vs. b} = 0.433

p _{a vs. c} = 0.042

p _{b vs. c} = 0.160

2.812 (0.694)

p _{a vs. b} = 0.624

p _{a vs. c} = 0.018

p _{b vs. c} = 0.007

2.646 (0.552)

p _{a vs. b} = 0.293

p _{a vs. c} = 0.097

p _{b vs. c} = 0.015

5.608 (1.203)

p _{a vs. b} = 0.934

p _{a vs. c} = 0.008

p _{b vs. c} = 0.007

Surgically treated under 3 years of age (b)

2.725 (0.361)

2.490 (0.423)

2.332 (0.693)

1.825

(0.552)

5.467 (1.202)

Surgically treated at or above 3 years of age (c)

4.389 (0.541)

3.581 (0.628)

5.821

(1.040)

4.327

(0.828)

11.495 (1.803)