TABLE 4

Final Logistic Regression Models for Variables That Predicted Sleep Disorder Diagnoses, According to Age Group

Predictor VariableB, Estimate ± SEOdds Ratio (95% Confidence Interval)
Infants
    Head circumference
        ≤2 SDs below mean2.01 ± 0.017.50 (5.94–9.54)a
        ≥2 SDs above mean0.46 ± 0.221.59 (1.03–2.44)b
    Ethnicity
        Black−0.55 ± 0.110.58 (0.46–0.72)a
        Other−0.42 ± 0.130.66 (0.51–0.84)a
    Physician provider0.59 ± 0.201.80 (1.21–2.65)a
Toddlers
    Male0.23 ± 0.061.26 (1.12–1.42)a
    Other ethnicity−0.42 ± 0.110.66 (0.53–0.81)a
    ASD0.70 ± 0.292.01 (1.14–3.56)b
Preschool-aged children
    Male0.24 ± 0.071.27 (1.11–1.45)a
    BMI ≥2 SDs above mean0.42 ± 0.121.52 (1.22–1.91)a
    Other ethnicity−0.34 ± 0.130.71 (0.56–0.92)a
    Income percentile
        25th–50th−0.40 ± 0.110.67 (0.54–0.84)a
        50th–75th−0.46 ± 0.110.63 (0.50–0.79)a
        >75th−0.37 ± 0.120.69 (0.55–0.88)a
    Provider
        Physician0.37 ± 0.131.44 (1.11–1.87)a
        Fellow/resident0.51 ± 0.191.66 (1.16–2.39)a
School-aged children
    Male0.36 ± 0.041.44 (1.32–1.57)a
    BMI ≥2 SDs above mean0.73 ± 0.062.07 (1.84–2.32)a
    Ethnicity
        Black0.20 ± 0.061.22 (1.08–1.37)a
        Hispanic0.29 ± 0.141.33 (1.01–1.77)b
        Other−0.32 ± 0.090.72 (0.61–0.85)a
    Income percentile
        25th–50th0.18 ± 0071.19 (1.05–1.36)a
        >75th−0.30 ± 0.070.74 (0.65–0.85)a
    Provider type
        Physician0.22 ± 0.081.25 (1.08–1.44)a
        Fellow/resident0.41 ± 0.111.50 (1.22–1.86)a
    Other diagnoses
        ADHD0.70 ± 0.062.00 (1.77–2.27)a
        ASD0.33 ± 0.141.39 (1.05–1.84)a
Adolescents
    Male0.24 ± 0.081.27 (1.08–1.49)a
    BMI ≥2 SDs above mean0.98 ± 0.102.67 (2.19–1.73)a
    Ethnicity
        Black0.48 ± 0.111.61 (1.29–2.02)a
        Other−0.53 ± 0.180.58 (0.41–0.84)a
    Income percentile
        25th–50th−0.26 ± 0.130.77 (0.60–0.99)b
        50th–75th−0.32 ± 0.130.72 (0.56–0.94)b
        >75th−0.40 ± 0.150.67 (0.50–0.90)a
    Physician provider0.32 ± 0.151.37 (1.02–1.84)b
    Other diagnoses
        ADHD0.95 ± 0.112.57 (2.10–3.16)a
        ASD0.56 ± 0.281.76 (1.02–3.03)b
  • Odds ratios are from trimmed logistic regression analyses in which all nonsignificant variables were eliminated from the final models. Only significant results are presented. Odds ratios of >1 represent increased odds of a sleep disorder diagnosis. Odds ratios of <1 represent decreased odds of a sleep disorder diagnosis. B indicates standardized β. Comparison groups for odds ratios were as follows: white, female, nurse provider, income of <25th percentile, and BMI and head circumference within 2 SDs of the mean.

  • a P < .01.

  • b P < .05.