TABLE 5.

Selected Neurodevelopmental and Growth Outcomes at 18 to 22 Months’ Corrected Age by Diagnostic Category of the Consensus BPD Definition

Outcome*No BPD (N = 876)Mild BPD (N = 1186)Moderate BPD (N = 1143)Severe BPD (N = 643)
% CP8.111.317.026.8
% MDI <7021.025.635.149.8
% PDI <7012.216.426.141.7
Blind
    % Unilateral0.230.171.11.6
    % Bilateral0.110.681.22.2
% Hearing impairment0.822.73.76.0
% Hearing aids0.351.72.03.9
% Neurodevelopmental impairment28.134.444.661.9
Weight, kg10.3 (1.5)10.4 (1.5)10.2 (1.5)10.0 (1.5)
Length, cm80.4 (4.5)80.6 (4.3)80.1 (4.4)79.1 (4.4)
Head circumference, cm46.8 (1.7)46.9 (1.8)46.7 (1.9)46.3 (2.1)
% Weight <10th percentile48.849.855.262.6
% Length <10th percentile30.628.937.946.2
% Head circumference <10th percentile21.821.727.339.4
Home oxygen prescribed, n (%)23 (2.7)88 (7.5)656 (57.8)395 (62.1)
Age home oxygen stopped, mo (SD; n)7.3 (3.8; 19)7.2 (4.4; 81)7.6 (4.1; 601)9.7 (4.8; 311)
  • MDI indicates Mental Developmental Index; PDI, Psychomotor Developmental Index.

  • * Missing data: CP, 24; MDI, 271; PDI, 320; blind, 30; hearing impairment, 53; hearing aids, 54; weight, 41; length, 50; head circumference, 36; weight <10th percentile, 60; length < 10th percentile, 69; head circumference <10th percentile 58; oxygen for home use, 41.

  • P < .0001, χ2 test for Blind; Mantel-Haenszel χ2 for linear association across the consensus definition categories for categorical variables; analysis of variance for continuous variables.

  • Mean ± SD.