. 2021 Apr 15;10(8):e019772. doi: 10.1161/JAHA.120.019772

Table 3.

Comparison of PWS and PWRI of Participants With Ruptured and Asymptomatic Intact AAAs of Similar Aortic Diameter

Study	Group	Number	Diameter (mm)	P Value	PWS (kPa)	P Value	PWRI	P Value
Singh et al (2020) ⁷	iAAA	50	82±14	0.906	263.8±69.4	0.192	1.09±0.52	0.982
Singh et al (2020) ⁷	rAAA	25	82±13		279.8±90.5		1.20±0.76
Siika et al (2019) ¹⁰	iAAA	40	53±5	0.319	197.0±40.3	0.162	0.35±0.08	0.016
Siika et al (2019) ¹⁰	rAAA	20	55±5		216.3±45.3		0.43±0.11
Siika et al (2018) ¹⁹	iAAA	15	73±11	0.674	284±53.4^*	0.194	0.48±0.11^*	<0.001
Siika et al (2018) ¹⁹	rAAA	28	74±12		249±53.9^*		0.80±0.54^*
Leemans et al (2018) ¹¹	iAAA	31	71±15	0.81	261±89 ^†	0.99	0.69±0.33	0.61
Leemans et al (2018) ¹¹	rAAA	31	72±18		262±75 ^†		0.70±0.27
Polzer et al (2015) ²⁰	iAAA	7	73±11	NR	NR		0.48±0.41 ^‡	NR
Polzer et al (2015) ²⁰	rAAA	7	76±14		NR		0.69±0.41 ^‡
Gasser et al (2010) ²⁶	iAAA	17	75±12	NR	292.0±108.7	NR	0.61±0.26	NR
Gasser et al (2010) ²⁶	rAAA	18	77±15		330.8±114.2		0.74±0.29
Truijers et al (2007) ¹⁶	iAAA	10	51±2	0.57	317±73 ^†	0.30	NR
Truijers et al (2007) ¹⁶	rAAA	10	53±2		367±126 ^†		NR

Values are expressed as mean±SD unless indicated otherwise. AAA indicates abdominal aortic aneurysm; iAAA, asymptomatic intact AAA; kPa, kilopascal; NR, not reported; PWRI, peak wall rupture index; PWS, peak wall stress; and rAAA, ruptured AAA.

SDs not available and were imputed from the diameter mismatched analysis reported in the same study.

^{^†}

PWS converted from newton per square centimeter to kPa.

^{^‡}

Derived PWRI values reported that have been divided by the mean arterial pressure inflation factor used in the study to obtain comparable results.