Table 5.

Multiple Regression-derived Mutually Adjusted Proportional Increments (in %) of LOS Among Survivors in NICUs and 95% CIs by a Series of Potentially Predictor Variables

VariableCategory or IncrementPercent Change95% CIP Value
Model 1: Basic model
 GenderMaleBaseline
Female−1−24, +30.97
 ReferralNoBaseline
Yes+61−3, +169.07
 NICUA+104+44, +18910−4
BBaseline
C−46−67, −12.01
 GA3 Weeks−60−64, −5510−4
 Residual BW/GAa100 G−12−14, −1010−4
 SNAP first 12 hours5 Points+42+26, +6110−4
Alternatively introduced variables instead of SNAP values, first 12 hours
 Model 2: SNAP values, second 12 hours5 Points+62+34, +9510−4
 Model 3: SNAP values, first 24 hours5 Points+41+27, +5810−4
Alternatively added to model 1
 Model 4: Apgar score (5 minutes)1 Unit−1−10, +11.99
 Model 5: maternal citizenshipGreek or EU memberBaseline
Other+48+4, +110.02
Alternatively added to model 2
 Model 6: Apgar score (5 minutes)1 Unit−6−15, +4.22
 Model 7: maternal citizenshipGreek or EU memberBaseline
Other+45+2, +105.04
Alternatively added to model 3
 Model 8: Apgar score (5 minutes)1 Unit−1−11, +10.80
 Model 9: maternal citizenshipGreek or EU memberBaseline
Other+51+6, +114.02
  • a BW conditional on GA.