TABLE 2

Scoring System for Rehospitalization by 18- to 22-Month Follow-up

VariableLevel of VariableOR (95% Confidence)Score
Shunt for hydrocephalusNo0.22 (0.13–0.37)1.0
Yes4.5
Infant in hospital >120 d due to pulmonary reasonsNo0.52 (0.42–0.64)1.0
Yes1.9
Proven necrotizing enterocolitis or spontaneous gastrointestinal perforationNo0.65 (0.52–0.80)1.0
Yes1.6
Fio2 at 36 wk0.210.63 (0.52–0.76)1.0
0.21–0.280.83 (0.59–1.16)1.3
>0.281.6
GenderFemale0.75 (0.65–0.86)1.0
Male1.3
Total scoreaSensitivitySpecificityPPVNPVOutcome Present (n)Outcome Absent (n)
>5.0100046015851840
>5.37540526511891096
>5.642796361661386
>8.559980558020
  • N = 3425 (1585 rehospitalized); 362 infants deleted from the 3787 evaluated infants due to missing values (360 missing Fio2 data, 2 infants missing shunt data). PPV indicates positive predictive value; NPV, negative predictive value.

  • Range of score: 5–10.9.

  • 0.63; R2 = 0.059; maximum rescaled R2 = 0.079.

  • Hosmer and Lemeshow goodness-of-fit test: P = .16.

  • a The total score is obtained by adding the scores for each of the variables. Shown in the lower half of the table is the interpretation of total score.