Table 2.

Breakdown of the number of hospital trusts and individual responses

Event Year, t	(1) Merged Hospitals				(2) Control Hospitals
	Mental Health		Acute		Mental Health		Acute		Acute a
	Hos b	Id c	Hos b	Id c	Hos b	Id c	Hos b	Id c	Hos b	Id c
−3	2	918	11	3,958	6	2,170	23	9,653	21	8,973
−2	2	913	11	4,243	6	2,140	23	9,261	21	8,833
−1	4	1,764	11	4,532	10	4,577	23	9,043	21	8,758
0	4	1,693	16	6,315	10	4,674	28	13,330	28	13,199
1	2	931	7	2,707	10	4,731	28	12,805	28	12,698
2	1	446	2	742	6	2,361	9	3,495	10	3,994
3	1	400	2	733	6	2,210	9	3,716	10	4,096
4	0	0	2	700	0	0	9	3,634	10	4,058

^aSelected using propensity score estimated by taking into account population mortality rate faced by merged hospitals.

^bNumber of hospitals.

^cNumber of individual staff responses.

Id, individual response; Hos, hospital trust.