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Table 3 Mean resource use and cost by APEX trial treatment group for total knee replacements (available cases)

From: Local anaesthetic wound infiltration in addition to standard anaesthetic regimen in total hip and knee replacement: long-term cost-effectiveness analyses alongside the APEX randomised controlled trials

  Intervention Control
  N Mean resource use (SD) Mean cost (SD) N Mean resource use (SD) Mean cost (SD)
Initial inpatient stay           
Theatre time (in minutes) 142 102 32 £1,449 £453 145 103 32.9 £1,461 £469
Recovery time (in minutes) 140 94 44 £359 £169 136 104 69.1 £398 £265
Days in wards 147 5.9 3.9 £1,789 £1,224 149 5.2 2.9 £1,586 £1,034
Secondary care after initial discharge         
Inpatient admissions after initial discharge a 103    £104 £533 110    £296 £907
Orthopaedics appointments 128 2.06 1.5 £209 £149 137 1.99 1.4 £202 £143
Physiotherapy appointments 128 0.44 2.1 £17 £82 137 0.40 1.3 £16 £50
Accident and emergency visits 128 0.16 0.7 £18 £84 137 0.18 1.2 £20 £145
Other appointments 128 0.00 0.0 £0 £0 137 0.03 0.2 £4 £34
Community Based resources           
GP contacts combined 85 2.65 4.3 £84 £151 102 3.83 5.7 £122 £212
Nurse contacts combined 90 0.98 1.4 £14 £22 104 1.09 2.7 £16 £43
Occupational therapist contacts combined 95 0.28 1.1 £5 £19 105 0.25 1.3 £4 £22
Community physiotherapist contacts combined 90 1.03 2.7 £18 £45 107 1.29 3.5 £22 £60
Prescribed medications a 102    £61 £211 108    £48 £81
Total NHS cost b 70    £3,807 £1,277 78    £4,255 £1,804
Personal social services (PSS)           
Home care worker (in hours) 135 1.17 12.9 £28 £310 136 1.24 14.4 £30 £346
Meals (food at home services) 132 0.14 1.6 £0 £5 129 0.11 1.2 £0 £4
Contacts with social worker 133 0.11 1.1 £4 £45 134 0.14 1.6 £7 £84
Home changes a 157    £3 £13 158    £1 £4
Total NHS+PSS cost b 70    £3,811 £1,276 75    £4,303 £2,102
  1. a The category combines different types of resource use, therefore an overall mean resource use could not be calculated
  2. b Total costs computed for patients with complete cost categories