Table 6.

Scale table to convert raw scores to T-scores and centiles

Centile	QoL		Functional health		Centile
	Raw score	T-score	Raw Score	T-score
99	93	66	97–100	61	99
97	92	65	–	–	97
95	91	–	–	–	95
93	90	64	–	–	93
91	89	63	–	–	91
90	88	62	–	–	90
88	87	61	–	–	88
86	86	60	–	–	86
83	85	59	94–96	59	83
79	84	–	–	–	79
73	82–83	57	93	57	73
71	81	56	–	–	71
68	80	–	92	57	68
64	79	55	90–91	56	64
61	78	55	–	–	61
58	77	54	86–89	55	58
56	76	52	–	–	56
51	75	52	85	53	51
48	72–74	50	81–84	52	48
40	69–71	48	78–80	50	40
34	66–68	46	75–77	48	34
27	64–65	44	71–74	46	27
22	61–63	42	68–70	44	22
17	59–60	40	64–67	42	17
15	58	39	63	39	15
11	57	38	57–59	37	11
10	51–56	37	49–56	35	10
5	35–50	33	31–48	31	5
1	0–34	20	0–30	20	1
Mean	72.7		80.9
S.D	13.0		16.9
Reliability	0.94		0.86