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Table 3 Association of Socio-economic position (SEP) with Prolonged length of stay (LOS)

From: Length of paediatric inpatient stay, socio-economic status and hospital configuration: a retrospective cohort study

   Model 1 Model 2 Model 3 Model 4
LOS IDACI (quartiles) OR 95% CI p value OR 95% CI p value OR 95% CI p value OR 95% CI p value
≥ to 1.8 days (mean) 1st (least) 1.00 - - 1.00 - - 1.00 - - 1.00 - -
2nd 1.04 0.84, 1.29 0.696 1.07 0.86, 1.34 0.54 1.07 0.85, 1.35 0.538 1.03 0.81, 1.30 0.824
3rd 1.26 1.02, 1.56 0.035 1.29 1.04, 1.61 0.023 1.27 1.01, 1.59 0.041 1.24 0.98, 1.57 0.068
4th (most) 0.98 0.78, 1.24 0.757 0.97 0.77, 1.23 0.795 1.00 0.78, 1.27 0.992 0.96 0.75, 1.23 0.746
≥to 4 days 1st (least) 1.00 - - 1.00 - - 1.00 - - 1.00 - -
2nd 1.13 0.88, 1.49 0.325 1.16 0.88, 1.52 0.285 1.18 0.89, 1.56 0.246 1.17 0.88, 1.57 0.288
3rd 1.27 0.97, 1.64 0.069 1.28 0.98, 1.68 0.072 1.23 0.93, 1.62 0.151 1.20 0.91, 1.59 0.196
4th (most) 0.96 0.70, 1.25 0.767 0.93 0.69, 1.25 0.638 0.96 0.71, 1.30 0.813 0.96 0.71, 1.30 0.789
>24 h (median) 1st (least) 1.00 - - 1.00 - - 1.00 - - 1.00 - -
2nd 1.21 0.94, 1.56 0.1516 1.19 0.92, 1.55 0.189 1.17 0.90, 1.54 0.237 1.05 0.79, 1.41 0.730
3rd 1.17 0.91, 1.51 0.221 1.17 0.90, 1.52 0.233 1.14 0.87, 1.49 0.359 1.11 0.83, 1.49 0.476
4th (most) 1.18 0.90, 1.54 0.230 1.14 0.87, 1.50 0.33 1.18 0.89, 1.57 0.249 1.07 0.79, 1.45 0.670
   IRR 95% CI p value IRR 95% CI p value IRR 95% CI p value IRR 95% CI p value
Days 1st (least) ref - - ref - - ref - - ref - -
2nd 1.07 0.95, 1.19 0.298 1.06 0.95, 1.19 0.310 1.06 0.94, 1.18 0.351 1.05 0.93, 1.17 0.443
3rd 1.16 1.04, 1.30 0.009 1.17 1.04, 1.31 0.009 1.14 1.02, 1.28 0.022 1.13 1.01, 1.27 0.027
4th (most) 1.14 1.01, 1.29 0.031 1.12 0.99, 1.27 0.061 1.13 1.01, 1.28 0.040 1.12 1.00, 1.26 0.056
  1. CI Confidence interval, IDACI Income deprivation affecting children index, IRR Incident Rate Ratio, LOS Length of stay, OR Odds ratio; ref: reference category
  2. Model 1: Adjusted for admission hospital and quartile of IDACI; as defined in Tables 1 and 2
  3. Model 2: Additionally adjusted for age (groups), gender, ethnicity (group) - as defined in Tables 1 and 2.
  4. Model 3: Additionally adjusted for final diagnosis, medical or surgical specialty and number of hospital admissions during the study period
  5. Model 4: Additionally adjusted for source of admission, weekend or week day admission, season and time of admission and readmission within 28 days- as defined in Tables 1 and 2)