Table 5.

Differences between pre- and post-test “I don’t know” responses on the Knowledge Questionnaire of Adolescent Depression for School Staff.

Item	Pre-test “I don’t know”		Post-test “I don’t know”		Absolute delta	Relative delta	p
	n	%	n	%
1	19	13	1	1	−12	0.05	0.000**
2	34	22	0	0	−22	0.00	0.000**
3	25	16	0	0	−16	0.00	0.000**
4	33	22	0	0	−22	0.00	0.000**
5	13	9	0	0	−9	0.00	0.001*
6	14	9	1	1	−9	0.07	0.003*
7	51	34	0	0	−34	0.00	0.000**
8	42	28	3	2	−26	0.07	0.000**
9	71	47	2	1	−45	0.03	0.000**
10	2	1	0	0	−1	0.00	0.498
11	8	5	0	0	−5	0.00	0.007*
12	11	7	0	0	−7	0.00	0.001*
13	10	7	1	1	−6	0.10	0.011*
14	16	11	1	1	−10	0.06	0.001*
15	27	18	3	2	−16	0.11	0.000**
16	8	5	0	0	−5	0.00	0.007*
17	2	1	0	0	−1	0.00	0.498
18	2	1	0	0	−1	0.00	0.498
19	5	3	0	0	−3	0.00	0.061
20	19	13	1	1	−12	0.05	0.000**
21	16	11	1	1	−10	0.06	0.001*
22	39	26	1	1	−25	0.03	0.000**
23	88	58	3	2	−56	0.03	0.000**
24	75	49	0	0	−49	0.00	0.000**
25	35	23	0	0	−23	0.00	0.000**
26	26	17	1	1	−16	0.04	0.000**

n = 152; p-value: chi-square or Fisher’s exact test (used when the expected values were 5 or less in any cell); * <0.05; ** <0.001.