Table 2.

Comparison of synchronous c-TCD and c-TTE with c-TCD alone and c-TTE alone.

N = 95	Number of positive cases (%)
	Grade III	Grade II	Grade I	Positive cases (n, %)	Negative cases (n, %)
c-TCD + c-TTE	13 (13.6%)*	19 (20.0%)‡	34 (35.8%)†	66 (69.5%)§	29 (30.5%)
c-TCD alone	5 (5.3%)*	5 (5.3%)‡	20 (21.1%)†	30 (31.6%)¥	65 (68.4%)
c-TTE alone	10 (10.5%)	17 (17.8%)	22 (23.2%)	49 (51.6%)	46 (48.4%)
Chi-squared value	* and *: 3.928	‡ and ‡: 9.347	† and †: 5.071	§ and ¥: 27.287 § and : 6.366
P value	* and *: .047	‡ and ‡: .002	† and †: .024	§ and ¥: .000 § and : .012

c-TCD = contrast transcranial Doppler, c-TTE = contrast transthoracic echocardiography.

* Number of positive cases in RLS Grade III.

¥ Number of positive cases in c-TCD alone.

† Number of positive cases in RLS Grade I.

‡ Number of positive cases in RLS Grade II.

§ Number of positive cases in c-TCD + c-TTE.

Number of positive cases in c-TTE alone.