TABLE 3.

RAND-IAQL T-Score Values and Standard Errors for Each Summed Score of the AQLQ-Marks

Summed score	Original AQLQ-Marks score	RAND-IAQL scale		Summed score	Original AQLQ-Marks score	RAND-IAQL scale
		T-score	T-score SE			T-score	T-score SE
0	0	29.4	4.8	41	5.125	57.3	1.5
1	0.125	33.4	3.6	42	5.25	57.7	1.5
2	0.25	35.6	3.1	43	5.375	58.0	1.5
3	0.375	37.3	2.8	44	5.5	58.4	1.5
4	0.5	38.6	2.6	45	5.625	58.8	1.5
5	0.625	39.7	2.4	46	5.75	59.2	1.5
6	0.75	40.7	2.2	47	5.875	59.5	1.5
7	0.875	41.6	2.1	48	6	59.9	1.5
8	1	42.4	2.0	49	6.125	60.2	1.5
9	1.125	43.1	2.0	50	6.25	60.6	1.5
10	1.25	43.8	1.9	51	6.375	60.9	1.5
11	1.375	44.4	1.8	52	6.5	61.3	1.5
12	1.5	45.0	1.8	53	6.625	61.7	1.5
13	1.625	45.6	1.8	54	6.75	62.1	1.5
14	1.75	46.1	1.7	55	6.875	62.4	1.5
15	1.875	46.7	1.7	56	7	62.8	1.5
16	2	47.2	1.7	57	7.125	63.1	1.5
17	2.125	47.7	1.6	58	7.25	63.5	1.5
18	2.25	48.1	1.6	59	7.375	63.9	1.5
19	2.375	48.6	1.6	60	7.5	64.3	1.5
20	2.5	49.1	1.6	61	7.625	64.7	1.5
21	2.625	49.5	1.6	62	7.75	65.1	1.5
22	2.75	49.9	1.6	63	7.875	65.5	1.6
23	2.875	50.3	1.6	64	8	65.9	1.6
24	3	50.8	1.6	65	8.125	66.4	1.6
25	3.125	51.2	1.6	66	8.25	66.8	1.6
26	3.25	51.6	1.6	67	8.375	67.3	1.7
27	3.375	52.0	1.6	68	8.5	67.7	1.7
28	3.5	52.4	1.5	69	8.625	68.2	1.7
29	3.625	52.8	1.5	70	8.75	68.8	1.8
30	3.75	53.2	1.6	71	8.875	69.3	1.8
31	3.875	53.6	1.6	72	9	69.9	1.9
32	4	54.0	1.6	73	9.125	70.6	2.0
33	4.125	54.4	1.5	74	9.25	71.3	2.1
34	4.25	54.7	1.5	75	9.375	72.1	2.2
35	4.375	55.1	1.5	76	9.5	73.0	2.4
36	4.5	55.5	1.5	77	9.625	74.1	2.6
37	4.625	55.8	1.5	78	9.75	75.4	2.9
38	4.75	56.2	1.5	79	9.875	77.0	3.2
39	4.875	56.6	1.5	80	10	79.9	4.0
40	5	57.0	1.5

Note: the summed score (0–80) is the sum of the 20 AQLQ-Marks items scored 0–4; the original AQLQ-Marks score is the average of the 20 items on 0–4 scale multiplied by 2.5 (score suggested by Marks, Dunn & Woolcock, 1993).