Table 2.

Overview agreement

	Presence of pulmonary RLS	Pulmonary RLS grade
Inter-injection agreement [1]
Kappa	0.96 (0.90–1.00)	0.96 (0.93–0.99)
Absolute agreement	105 (98.1%)	99 (92.5%)
Inter-injection agreement [2]
Kappa	0.98 (0.94–1.00)	0.95 (0.92–0.98)
Absolute agreement	106 (99.1%)	98 (91.6%)
Inter-observer agreement
Kappa	0.95 (0.91–0.99)	0.97 (0.95–0.99)
Absolute agreement	209 (97.7%)	203 (94.9%)

Absolute agreement is described as number with percentage, other agreements are described as kappa with 95% confidence interval. (1): observer 1; (2): observer 2

RLS right-to-left shunt