Prevalence of acute stress disorder among road traffic accident survivors: a meta-analysis

BMC Psychiatry

Table 3 Subgroup analyses of the pooled prevalence of ASD among RTA survivors

Subgroup		Number of studies	Number of survivors with ASD	Total sample	Pooled prevalence (95% CI) (%)	Test of difference within each subgroup
Subgroup						Chi-square value	P value
Country of study						79.111	< 0.001^*
	USA	2	51	1578	11.16 (0.00–48.57)
	UK	3	73	584	14.24 (7.34–22.88)
	Australia	3	40	326	12.11 (8.73–15.95)
Instrument used to identify ASD						49.038	< 0.001^*
	Self-report questionnaire	6	112	677	17.82 (4.05–38.11)
	Structured interview	6	142	1945	15.26 (7.03–25.81)
Age						170.088	< 0.001^*
	Child or adolescent	6	106	2208	9.03 (2.90–17.89)
	Adult	5	111	495	21.51 (11.82–33.08)
Gender						13.667	< 0.001^*
	Male	2	27	361	7.43 (4.90–10.42)
	Female	2	32	177	17.89 (12.50–23.96)
TBI						0.779	0.377
	Yes	2	25	145	17.09 (11.30–23.75)
	No	2	19	141	13.27 (3.69–27.13)

ISSN: 1471-244X