Table 2.

Corrections and displacements overall

Radiotherapy treatment centre*	Patients with data	Total fractions reported	Fractions reported per patient		Total films/images	Displaced fractions reported [n (%)]†		Corrected fractions reported [n (%)]†
			Median	Quartiles		3 mm+	5 mm+	3 mm+	5 mm+
2	49	653	13	12–14	1396	246 (38)	38 (6)	11 (2)	3 (0)
3	149	1614	11	9–12	3259	983 (61)	558 (35)	173 (11)	48 (3)
4	35	376	10	10–12	1193	228 (61)	137 (36)	21 (6)	8 (2)
7	22	299	14	12–15	702	102 (34)	41 (14)	34 (11)	7 (2)
8	40	481	11	10–14	968	169 (35)	68 (14)	10 (2)	2 (0)
9	14	137	10	9–11	213	63 (46)	22 (16)	11 (8)	1 (1)
10	40	433	11	10–12	1054	123 (28)	40 (9)	10 (2)	3 (1)
11	139	1518	11	9–13	3204	495 (33)	171 (11)	127 (8)	33 (2)
15	5	29	8	2–8	60	3 (10)	1 (3)	0 (0)	0 (0)
16	31	280	9	8–10	528	85 (30)	49 (18)	35 (13)	19 (7)
17	19	152	8	7–9	364	64 (42)	33 (22)	2 (1)	1 (1)
18	3	23	8	6–9	73	6 (26)	0 (0)	1 (4)	0 (0)
19	92	1028	11	10–12	3213	38 (4)	33 (3)	34 (3)	31 (3)
20	7	61	8	8–10	139	5 (8)	1 (2)	3 (5)	1 (2)
22	22	177	8	7–9	372	9 (5)	2 (1)	1 (1)	1 (1)
23	3	29	10	9–10	87	19 (66)	6 (21)	0 (0)	0 (0)
25	2	23	12	11–12	44	16 (70)	8 (35)	6 (26)	6 (26)
30	23	222	10	8–12	524	143 (64)	89 (40)	11 (5)	11 (5)
Total	695	7535	11	9–12	17 393	2797 (37)	1297 (17)	490 (7)	175 (2)

^∗Sites have been coded. The same codes are used in Tables 1 and 2.

^†3 mm+ displacements include 5 mm+ displacements.