Prevalence and psychometric screening for the detection of major depressive disorder and post-traumatic stress disorder in adults injured in a motor vehicle crash who are engaged in compensation

Table 5 True positive and negatives (TP, TN), false positive and negatives (FP, FN), chi-square (X²) results, odds ratios (OR), sensitivity (%) and specificity (%) results for DASS-21 total, depression and anxiety cut-off scores for probable MDD

Cut off score	TP	TN	FN	FP	X ²	OR	95% CI	Sensitivity	Specificity
Total score
30	45	36	15	13	25.4**	8.3**	3.5–19.7	77.6	70.6
31	43	37	14	15	23.7**	7.6**	3.2–17.7	74.1	72.5
32	43	37	14	15	23.7**	7.6**	3.2–17.7	74.1	72.5
33	42	39	12	16	25.9**	8.5**	3.6–20.3	72.4	76.5
Depression
10	42	38	13	16	23.9**	7.7**	3.3–18.0	76.4	70.4
11	40	39	12	18	22.5**	7.2**	3.1–16.9	76.9	68.4
12	40	39	12	18	22.5**	7.2**	3.1–16.9	69.0	76.5
13	34	43	8	24	21.1**	7.6**	3.0–19.1	58.6	84.3
Anxiety
6	42	32	19	16	13.6*	4.4*	1.9–9.9	72.4	62.7
7	42	35	16	16	18.4**	5.7**	2.5–13.1	72.4	68.6
8	42	35	16	16	18.4**	5.7**	2.5–13.1	72.4	68.6
9	38	39	12	20	19.3**	6.2**	2.6–14.3	65.5	76.5

ISSN: 2050-7283