NHS Heart Bypass Surgery (Hansard, 14 October 1997)

The information is shown in the following table.

Table: coronary artery bypass grafts performed in NHS hospitals
Year	England	Scotland	Wales	Northern Ireland	yearly Total
1970	—¹	—	—	—³	0
1971	—¹	—	—	—³	0
1972	—¹	6	—	—³	6
1973	—¹	26	10	—³	36
1974	—¹	23	8	—³	31
1975	—¹	67	14	—³	81
1976	—¹	113	27	—³	140
1977	—¹	187	29	—³	216
1978	—¹	223	24	—³	247
1979	—¹	244	38	—³	282
1980	—¹	265	37	—³	302
1981	—¹	337	66	—³	403
1982	—¹	392	71	—³	463
1983	—¹	425	155	—³	580
1984	—¹	646	163	—³	809
1985	—¹	814	222	—³	1,036
1986	—¹	1,058	206	—³	1,264
1987–88	—¹	1,295	212	—³	1,507
1988–89	9,655	1,426	184	—³	11,265
1989–90	10,611	1,544	249	—³	12,404
1990–91	11,797	1,364	144	—³	13,305
1991–92	12,837	1,612	410	39	14,898
1992–93	14,488	1,687	472	60	16,707
1993–94	15,863	2,209	535	493	19,100
1994–95	17,136	2,298	560	719	20,713
1995–96	—²	2,268	629	764	3,661

Notes:

England:

Moved to counting over the financial year rather than calendar year from 1987–88.

¹ Method of data collection prior to 1988 means that coronary artery by-pass grafts are not separately identifiable. No data available.

²Data not yet available.

Scotland:

All operations relate to those carried out in NHS hospitals as principal operation.

Wales:

Moved to counting over the financial year rather than calendar year from 1983–84.

Northern Ireland:

³Adequate data prior to 1991–92 is not available.