Table 2

Follow-up mean costs (£) per patient by trial arm

Year 1
Mean cost
Year 2
Mean cost
Year 3
Mean cost
Year 4
Mean cost
Year 5
Mean cost
Total at year 5Difference
(95% CI to P values)
SITA
(n=1554)
BITA
(n=1548)
SITA
(n=1554)
BITA
(n=1548)
SITA
(n=1554)
BITA
(n=1548)
SITA
(n=1554)
BITA
(n=1548)
SITA
(n=1554)
BITA
(n=1548)
SITA
(n=1554)
BITA
(n=1548)
BITA vs SITA
Healthcare contacts
 GP visits240234166162156153150142143140855831−23.7 (−70 to 23; 0.319)
 Nurse visits4650172020212022202112213311.3 (−6 to 29; 0.203)
 Outpatient clinic visits247309153187124167158148142145822955133.2 (−7 to 273; 0.062)
 Cardiac rehabilitation visits370378848263504970393960661913.3 (−112 to 139; 0.835)
 Number of nights in hospital1682348753448167641067647250936.8 (−94 to 167; 0.581)
All healthcare contacts1071120550650440747344444645042228773048170.9 (−78 to 420; 0.178)
Medications
 Total medication3738394140444145414319821113.0 (−9 to 34; 0.237)
Adverse event treatment
 Myocardial infarction15123569769940411.5 (−21 to 24; 0.897)
 Cerebrovascular accident2613121210771021167657−18.1 (−52 to 16; 0.300)
 Further CABG060006000001312.7 (−5 to 30; 0.156)
 Further PCI54414324414117323429189167−22.0 (−86 to 42; 0.501)
 Revascularisation with catheter418162027141811218677912.7 (−22 to 47; 0.471)
 Sternal wound problems10429510000100105296191.1 (66 to 317; 0.003)
 Major bleed588300000100588426.1 (−64 to 116; 0.570)
 Other events (cost of hospital stay only)45950019117016815216118922518112041192−12.1 (−344 to 320; 0.943)
 Death (cost of hospital stay only)5826341954055103034182128−53.7 (−168 to 60; 0.357)
All adverse event costs77799429924925826926625932028619202058138.3 (−283 to 559; 0.520)
All costs1848219980575366474170970577070849955317322.1 (−207 to 852; 0.233)
Difference in costs (p value)351 (0.028)−52 (0.469)77 (0.259)−4 (0.952)−63 (0.561)
  • SITA, single internal thoracic artery; BITA, bilateral internal thoracic artery; CABG, coronary artery bypass graft surgery; GP, general practitioner; PCI, percutaneous coronary interventions.