Table 2.

Calibration design of reading literacy module administration.

Block	Booklet										N of valid records	N of items
	1	2	3	4	5	6	7	8	9	10
1	√									√	434	13
2	√	√									451	10
3		√	√								450	13
4			√	√							443	10
5				√	√						435	13
6					√	√					436	10
7						√	√				436	13
8							√	√			428	10
9								√	√		419	13
10									√	√	416	10
N of records	225	226	224	219	216	220	216	212	207	209	2,174
N of items	23	23	23	23	23	23	23	23	23	23		115