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Table 1 Distributions of observed versus expected numbers of combinations of cognitive impairments in preterm and control children

From: Multi-domain cognitive impairments at school age in very preterm-born children compared to term-born peers

  Preterms Controls
Observed Expected Observed Expected
None 33 (55%) 26.1 (43.6%) 97 (81%) 94.2 (78.5%)
One impairmenta 18 (30%) 20.2 (33.7%) 19 (16%) 23.5 (19.6%)
Two impairmentsa 4 (7%) 11.6 (19.3%) 3 (3%) 2.2 (1.8%)b
Three impairments and overa 5 (8%) 2.0 (3.4%) 1 (1%) 0.1 (0.2%)b
P-value 0.01 0.35b
Cohen’s W 0.43 0.13b
  1. aRefer to abnormal (< 5th percentile) test scores
  2. bTwo highest categories have been combined for statistical testing
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BMC Pediatrics

ISSN: 1471-2431

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