treatment	period	subject	SSIproportion
parox	0	a	12
parox	6	a	10
parox	12	a	6
parox	0	b	25
parox	6	b	13
parox	12	b	18
parox	0	c	19
parox	6	c	21
parox	12	c	13
parox	0	d	46
parox	6	d	17
parox	12	d	25
parox	0	e	6
parox	6	e	5
parox	12	e	3
plac	0	f	12
plac	6	f	16
plac	12	f	11
plac	0	g	25
plac	6	g	20
plac	12	g	14
plac	0	h	4
plac	6	h	2
plac	12	h	2
plac	0	i	4
plac	6	i	4
plac	12	i	4
plac	0	l	10
plac	6	l	5
plac	12	l	9