Table 1.

Summary of 13 studies (15 data sets) included in the meta-analysis.

		ASD patients					Healthy controls			Quality scores (out of 10)
Study	Modality/analysis	Diagnosis	Diagnostic tool	Age (M ± SD)	IQ (M ± SD)	N (F/M)	Age (M ± SD)	IQ (M ± SD)	N (F/M)
Dajani and Uddin (7)	rs-fMRI/ReHo	ASD ASP	DSM-IV	9.26 ± 1.28	112.44 ± 20.60	1/17	9.32 ± 1.35	112.72 ± 13.79	3/15	10
Dajani and Uddin (7)	rs-fMRI/ReHo	ASD ASP	DSM-IV	13.58 ± 1.86	104.55 ± 15.86	4/16	14.28 ± 1.78	104.95 ± 15.67	4/16	10
Dajani and Uddin (7)	rs-fMRI/ReHo	ASD ASP	DSM-IV	25.57 ± 6.32	108.53 ± 15.18	4/11	24.20 ± 4.16	111.07 ± 11.04	4/11	10
Maximo et al. (6)	rs-fMRI/ReHo	ASD	ADI-R and ADOS	13.8 ± 2.4	107.9 ± 19.0	4/25	13.5 ± 2.2	108 ± 8.9	7/22	10
Li (14)	rs-fMRI/ReHo	ASD	DSM-IV	12.14 ± 3.51	89.14 ± 9.21	22/28	12.01 ± 3.41	89.75 ± 9.37	20/30	10
Li et al. (15)	rs-fMRI/ReHo	ASD	DSM-IV and ADI-R	12 ± 3	83.87 ± 15.51	3/13	12 ± 3	91.06 ± 12.40	3/13	9.0
Paakki et al. (5)	rs-fMRI/ReHo	ASD	ICD-10	NA	NA	29	NA	NA	30	8.5
Wang (16)	rs-fMRI/ReHo	ASD	DSM-IV	3.4 ± 1.1	NA	4/16	3.3 ± 1.1	NA	5/15	9.0
Jann et al. (17)	ASL-fMRI/CBF	ASD	ADI-R and ADOS	13.8 ± 2.0	107.8 ± 18.7	4/13	12.8 ± 3.6	107.8 ± 14.3	3/19	10
Pagani et al. (18)	PET/CBF	ASD	ADOS-G and RAADS-R	31.8 ± 8.6	104.2 ± 17.1	6/7	28.5 ± 7.5	115.7 ± 10.8	5/5	9.5
Qiu (19)	SPECT/CBF	ASD	DSM-IV	2–11	NA	3/20	2–11	NA	2/8	9.0
Xiu (20)	SPECT/CBF	ASD	ICD-10	7.2 ± 3.0	NA	3/20	5.5 ± 2.4	NA	1/7	9.0
Itahashi et al. (21)	rs-fMRI/ALFF	ASD	DSM-IV	30.82 ± 7.39	105.60 ± 14.12	7/43	31.60 ± 7.60	108.09 ± 8.98	7/43	10
Cheng et al. (22)	rs-fMRI/ALFF	ASD	DSM-IV and ADI-R	4 ± 1	55 ± 14	0/33	4 ± 1	99 ± 23	0/26	9.5
Cao et al. (23)	rs-fMRI/ReHo/ALFF	ASD	DSM-IV	10.38 ± 1.39	89.27 ± 7.91	6/20	10.63 ± 1.13	92.75 ± 6.49	5/19	10