Table 2.

Various statistics describing the agreement between invasive and non-invasively determined pulmonary artery systolic pressure

Sub-analysis Category	n	Mean Error	r	p Value	Discordant PASP Clinical Category	Odds Ratio	p Value	Bias	95% Limits of Agreement
Total cohort	618	30.20%	0.52	<0.001*	54.40%	-	-	9.0%	−53.2% to 71.2%
Tricuspid regurgitation gradient	618	30.20%	0.55	<0.001*	-	-	-	1.1%	−70.5% to 72.1%
Right atrial pressure estimatable	428	26.30%	0.57	<0.001*	51.60%	0.7	0.04*	4.5%	−56.3% to 65.3%
Same day studies	286	30.10%	0.59	<0.001*	50.70%	0.8	0.09	9.6%	−51.9% to 71.0%
Outpatients	206	31.50%	0.59	<0.001*	53.70%	1.0	0.82	11.3%	−50.4% to 73.0%
Echocardiography after right heart catheterization	432	30.50%	0.53	<0.001*	53.00%	1.2	0.30	9.6%	−53.9% to 73.1%
Body surface area ≤ 2	325	32.70%	0.53	<0.001*	51.40%	0.8	0.12	12.5%	−50.6% to 75.6%
Moderate and severe tricuspid regurgitation	160	28.60%	0.59	<0.001*	55.00%	0.9	0.58	10.9%	−46.6% to 68.4%
Moderate tricuspid regurgitation	130	30.10%	0.58	<0.001*	55.40%	1.1	0.79	12.3%	45.7% to 70.3%
Severe tricuspid regurgitation	30	22.70%	0.63	<0.001*	40.00%	0.5	0.10	4.7%	−50.1% to 59.6%
Combined variable	98	26.70%	0.61	<0.001*	55.30%	1.0	0.90	8.0%	−49.3% to 65.4%

PASP: Pulmonary artery systolic pressure. PASP clinical categories were defined as: normal (≤ 30 mmHg), mildly elevated (31–45 mmHg), moderately elevated (46–60 mmHg), and severely elevated (>60 mmHg). Odds ratio describes the odds of clinical category misclassification between the subgroup and the remainder of the cohort excluded from the subgroup. Bias and 95% limits of agreement calculated with Bland-Altman method and r value represents Pearson correlation between invasively and non-invasively determined PASP within the subgroup.

^*represents significant p Value.