Table 4.

Total costs (£) to the 5-year follow-up by trial arm and by subgroups

	SITA Mean cost	BITA Mean cost	BITA vs SITA Mean difference (95% CI to P values)
No history of diabetes (n=2368)	17 269	17 951	681 (−227 to 1590; 0.142)
Insulin-dependent diabetes (n=174)	18 355	24 028	5673 (1334 to 10012; 0.011)
Non-insulin-dependent diabetes (n=560)	17 957	19 403	1447 (−474 to 3367; 0.140)
Aged <70 years (n=2271)	16 474	17 842	1368 (538 to 2198; 0.001)
Aged ≥70 years (n=831)	20 042	20 666	623 (−1398 to 2644; 0.545)
Off-pump (n=1259)	17 905	18 065	160 (−1237 to 1557; 0.823)
On-pump (n=1819)	17 256	19 214	1958 (985 to 2931; 0.000)
No prior MI (n=1800)	17 222	18 088	866 (−150 to 1882; 0.095)
Prior MI (n=1300)	17 746	19 260	1514 (187 to 2840; 0.025)
NYHA class I and II (n=2431)	17 556	18 296	740 (−132 to 1612; 0.096)
NYHA class III and IV (n=669)	17 039	19 582	2542 (534 to 4550; 0.013)
CCS class 0 to I, II (n=2143)	17 571	18 185	614 (−347 to 1575; 0.210)
CCS class III to IVa/b/c (n=959)	17 175	19 452	2278 (769 to 3786; 0.003)
UK (n=2053)	18 052	18 864	813 (−306 to 1932; 0.154)
Poland (n=606)	15 691	16 811	1120 (130 to 2109; 0.027)
Australia (n=192)	19 878	21 767	1889 (−682 to 4460; 0.149)

BITA, bilateral internal thoracic artery; CCS, Canadian Cardiovascular Society; MI, myocardial infarction NYHA, New York Heart Association; SITA, single internal thoracic artery.