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Randomized Controlled Trial
. 2013 Winter;25(4):395-401.
doi: 10.1097/PEP.0b013e31829db85b.

Concurrent validity of the TIMP and the Bayley III scales at 6 weeks corrected age

Suzann K Campbell  1 , Laura Zawacki, Kristin M Rankin, Joseph C Yoder, Nicole Shapiro, Zhuoying Li, Rosemary White-Traut
Affiliations
Randomized Controlled Trial

Concurrent validity of the TIMP and the Bayley III scales at 6 weeks corrected age

Suzann K Campbell et al. Pediatr Phys Ther. 2013 Winter.

Abstract

Purpose: Examine agreement between the Test of Infant Motor Performance (TIMP) and the Bayley III.

Methods: One hundred forty-five infants born at 29 to 34 weeks gestation with socioenvironmental risk factors were tested on the TIMP and Bayley III at 6 weeks corrected age (CA). Scores were correlated to assess convergence/divergence of content. Decision analysis using a cutoff of the mean on the Bayley Motor Composite and -0.5 and -1 SD from the mean on the TIMP assessed agreement on delay/nondelay.

Results: The TIMP-Bayley Motor Composite correlation was 0.546, with Cognitive was 0.310, and with Language was 0.281. Nine percent of infants scored less than -1.0 SD on the TIMP, while no child scored less than -1 SD on the Bayley Motor scale (sensitivity, 31%).

Conclusions: Convergent validity between the TIMP and the Bayley Motor scale was demonstrated, but no infant showed delay on any Bayley scale. The TIMP is preferred for early assessment of infants.

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References

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    1. Campbell SK, Levy P, Zawacki L, Liao PJ. Population-based age standards for interpreting results on the Test of Infant Motor Performance. Pediatr Phys Ther. 2006;18:119–125. doi: 10.1097/01.pep.0000223108.03305.5d. - PubMed
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    1. Campbell SK, Kolobe THA. Concurrent validity of the Test of Infant Motor Performance with the Alberta Infant Motor Scale. Pediatr Phys Ther. 2000;12:1–8.
    1. Campbell SK, Kolobe THA, Wright BD, Linacre JM. Validity of the Test of Infant Motor Performance for prediction of 6-, 9- and 12-month scores on the Alberta Infant Motor Scale. Dev Med Child Neurol. 2002;44:263–272. doi:10.1111/j.1469-8749.2002.tb00802.x. - PubMed

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