Table 4

Comparison of costs and efficiency between dependency groups (n=5739)

ParameterLow dependency (admission NPDS <10)
n=699 (12%)
Medium dependency (admission NPDS 10–24)
n=1607 (28%)
High dependency (admission NPDS ≥25)
n=3433 (60%)
One-way ANOVA
Mean95% CIMean95% CIMean95% CIFp Value
Length of stay (days)5147 to 546259 to 6410299 to 104376.3<0.001
Cost of rehabilitation£23 997£22 025 to £26 089£28 473£27 181 to £29 731£47 111£45 789 to £448 314345.0<0.001
NPDS/NPCNA
Admission
 NPDS total score5.65.4 to 5.817.216.9 to 17.441.741.3 to 42.15401.7<0.001
 Care hours/week15.915.2 to 16.631.931.3 32.457.156.6 to 57.54160.8<0.001
 Care costs £/week£436£402 to £470£926£897 to £954£2109£2083 to £21362466.9<0.001
Discharge
 NPDS total score5.14.6 to 5.59.59.1 to 9.925.725.2 to 26.3913.1<0.001
 Care hours/week11.310.5 to 12.018.718.0 to 19.439.138.4 to 39.8966.1<0.001
 Care costs £/week£306£271 to £342£517−£436 to −£547£1349£1315 to £1384689.9<0.001
Change
 NPDS total score−0.5−1.0 to −0.0−7.6−8.0 to −7.2−16.0−16.5 to −15.5468.0<0.001
 Care hours/week−4.6−5.5 to −3.8−13.2−13.9 to −12.5−18.0−18.7 to −17.3157.4<0.001
 Care costs £/week−£130£−178 to −£82−£408£−445 to −£370−£760£−794 to −£726174.2<0.001
Efficiency
 Time to offset costs of rehabilitation (months)27.715.9 to 39.722.316.9 to 29.214.29.9 to 18.83.7<0.024
 FIM efficiency0.370.34 to 0.410.540.51 to 0.560.380.37 to 0.4051.4<0.001
 FAM efficiency0.700.64 to 0.770.830.79 to 0.880.580.56 to 0.6154.3<0.001
  • ANOVA, analysis of variance; FIM, Functional Independence Measure; FIM+FAM, UK Functional Assessment Measure; NPCNA; Northwick Park Care Needs Assessment; NPDS, Northwick Park Dependency Score.