Table 2.

Predictive validity of RHS-13 and RHS-15 cases.

		Comparison RHS self-rating to clinical rating						Comparison RHS interview to clinical rating
		BSI and/or PCL case		PCL case		BSI case		BSI and/or PCL case		PCL case		BSI case
		positive	negative	positive	negative	positive	negative	positive	negative	positive	negative	positive	negative
RHS-13 case	positive	15	8	6	16	15	8	18	5	7	15	18	5
	negative	4	29	1	32	4	28	1	32	0	33	1	31
	Statistic	LR χ2 = 17.65, p < .001		p < .05a		LR χ2 = 17.07, p < .001		LR χ2 = 38.70, p < .001		p < .001a		LR χ2 = 37.92, p < .001
	Effect size	ⱷ = .55		ⱷ = .36		ⱷ = .55		ⱷ = .78		ⱷ = .47		ⱷ = .78
	PPV/NPV	.65/.88		.27/.97		.65/.88		.78/.97		.32/1.00		.78/.97
	Sens/Spec	.79/.78		.86/.67		.79/.78		.95/.87		1.00/.69		.95/.86
RHS-15 case	positive	17	11	6	21	17	11	19	11	7	22	19	11
	negative	2	26	1	27	2	25	0	26	0	26	0	25
	Statistic	LR χ2 = 19.81, p < .001		p = .051a		LR χ2 = 19.13, p < .001		LR χ2 = 32.31, p < .001		p < .05a		LR χ2 = 31.48, p < .001
	Effect size	ⱷ = .57		ⱷ = .28		ⱷ = .56		ⱷ = .67		ⱷ = .36		ⱷ = .66
	PPV/NPV	.61/.93		.22/.96		.61/.93		.63/1.00		.24/1.00		.63/1.00
	Sens/Spec	.90/.70		.86/.56		.90/.69		1.00/.70		1.00/.54		1.00/.69

RHS = Refugee Health Screener, BSI = Brief Symptom Inventory-18, PCL = Posttraumatic Stress Disorder Checklist-5, BSI and/or PCL case = BSI-18 or PCL-5 OR BSI-18 and PCL-5 are positive, PCL case = PTSD diagnosis (DSM-5) fulfilled, BSI case = above BSI-18 cutoff, RHS-13 case = above RHS-13 cutoff, RHS-15 case = above RHS-15 cutoff, PPV = positive predictive value, NPV = negative predictive value, Sens = sensitivity, Spec = specificity, LR χ² = likelihood ratio χ², ⱷ = effect size phi, ^a Fisher’s exact test.