Table 2

Results Stage 1: negative binomial models for length of stay per team category

HASUs (1)RATs (2)NRATs (3)NAITs (4)
Previous mRS score, ref. group: mRS=2
 Previous mRS=0 or previous mRS=11.0121.096*
0.0430.052
 Previous mRS=31.145***1.121***
0.0380.040
 Previous mRS=41.467***1.337***
0.0470.043
 Previous mRS=51.655***1.620***
0.0610.059
Severity of stroke, ref. group: mild (NIHSS<5)
 Moderate (NIHSS 5–14)1.132***1.533***1.206***1.184***
0.0150.0120.0260.024
 Severe (NIHSS 15–20)1.189***1.823***1.402***1.276***
0.0260.0210.0410.033
 Very severe (NIHSS>20)1.221***1.838***1.427***1.292***
0.0290.0220.0470.037
 Intracerebral haemorrhage1.081***1.195***1.098***1.032
0.0220.0120.0250.022
Need for therapy
 Need for occupational therapy (n_OT)1.779***2.306***2.083***1.695***
0.0400.0290.0780.114
 Need for physiotherapy (n_PT)1.762***1.754***1.720***1.691***
0.0460.0250.0750.115
 Need for speech and language therapy (n_SALT)1.456***2.121***1.778***1.336***
0.0250.0190.0400.026
 Need for psychological therapy
(n_PSY)
1.613***2.315***1.920***1.395***
0.0660.0380.0490.037
Amount of therapy
 n_OT x OT average daily minutes0.985***0.977***0.986***0.986***
0.0000.0000.0010.001
 n_PT x PT average daily minutes0.988***0.995***0.996***1.001
0.0010.0000.0010.001
 n_SALT x SALT average daily minutes0.986***0.970***0.983***0.994***
0.0010.0010.0010.001
 n_PSY x PSY average daily minutes0.986***0.951***0.973***0.977***
0.0020.0040.0030.006
Order of team in patient pathway1.381***1.057***1.059*
0.0270.0200.032
Transferred from a HASU to another inpatient
stroke unit
1.3540.9440.816***0.758**
0.2620.0710.0200.086
Deceased1.418***0.830***0.810***0.765***
0.0490.0090.0240.044
Transferred to another inpatient stroke unit1.197***1.070***0.661***0.670***
0.0170.0110.0160.031
 Constant1.828***2.512***4.376***8.768***
0.0510.0660.2910.940
 N14 720112 33911 6936644
 Alpha (dispersion)0.128***0.582***0.494***0.338***
 Adj. Deviance R^20.4520.4810.4710.331
  • Exponentiated coefficients (IRR); Standard errors in second row.

  • Team deviations not shown. *p<0.10, **p<0.05, ***p<0.01. Additional covariates not included in the table for presentation purposes: age, sex, ethnicity, social deprivation and stroke related co-morbidities.

  • HASUs, hyper-acute stroke units; mRS, modified Rankin Scale; NAITs, Non-Acute Inpatient Teams; NIHSS, National Institutes of Health Stroke Scale; NRATs, Non-Routinely admitting Acute Teams; NB, negative binomial; RATs, Routinely Admitting Teams.