TABLE 4

Differences Between Children With and Without SSC Adjusted for Intervention Participation

Neurodevelopmental TestAdjusted, With Censored Normal Regressiona,b
Difference (95% CI)P
Full-Scale IQ−6.5 (−10.3 to −2.8)<.001
Math computation−6.8 (−10.4 to −3.1)<.001
Reading composite−5.0 (−9.3 to −0.6).03
Spelling−2.5 (−6.4 to 1.5).23
Total word reading efficiency−3.6 (−7.6 to 0.4).08
Phonological awareness−5.2 (−9.1 to −1.3).010
Rapid naming−1.9 (−5.0 to 1.3).24
  • a Adjusted for age (continuous), gender, SES (continuous), and maternal IQ (continuous).

  • b Among families reporting intervention data, 82/177 case participants (46%) and 58/167 control participants (35%) received ≥1 interventions.