The strengths and difficulties questionnaire as a screening instrument for norwegian child and adolescent mental health services, application of UK scoring algorithms

Table 4 Screening Efficiency for the Diagnostic Categories for Different Levels of Dichotomisation among 286 patients in the Child and Adolescent Mental Health Services North Study, Norway, 2006-2008

	Sensitivity (prob^a/poss^b)	Specificity (prob^a/poss^b)	PPV (prob^a/poss^b)	NPV (prob^a/poss^b)	LHR⁺ (prob^a/poss^b)	LHR^- (prob^a/poss^b)	OR^D (prob^a95% CI)	OR^D (poss^b95% CI)
Emotional disorders	0.47/0.81	0.87/0.55	0.66/0.48	0.76/0.84	3.68/1.78	0.61/0.45	6.05 (3.37-10.84)	5.04 (2.83-8.98)
Hyperactivity disorders	0.77/1.00	0.80/0.45	0.46/0.28	0.94/1.00	3.91/1.81	0.29/0.00	13.35 (6.48-27.51)	^c
Conduct disorders	0.83/0.97	0.75/0.58	0.59/0.51	0.91/0.98	3.29/2.30	0.23/0.06	14.41 (7.59-27.36)	39.26 (12.00-128.46)
Any disorder	0.85/0.96	0.52/0.24	0.77/0.71	0.65/0.74	1.78/1.25	0.29/0.18	6.20 (3.53-10.90)	6.90 (2.95-16.12)

^aDichotimised on probable level ('unlikely and 'possible' labelled 'no diagnosis', 'probably' labelled 'diagnoses'), ^bDichotomised on possible level (unlikely labelled 'no diagnosis', 'possible' and 'probably' labelled 'diagnoses'), ^cNot possible to calculate due to zero in the denominator. Categorised as potentially useful.
Note. Potentially useful tests as indicated by the guideline provided by Fischer, Bachmann and Jaeschke [20] in bold.

ISSN: 1753-2000