Table 3.

Comparison parameters of strain rate and strain of the SLE patients with the control group (x ± s)

strain	Group A (n = 30)	Group B (n = 37)	Group C (n = 34)	Group D (n = 31)
ε, %
Basal	-33.87 ± 5.89	-32.19 ± 7.38	-25.77 ± 7.67↑*	-19.55 ± 4.89$*#
Middle	-31.67 ± 7.00	-29.09 ± 7.30	-22.89 ± 8.05↑*	-17.67 ± 6.83$*#
Apical	-25.45 ± 6.99	-27.51 ± 2.47	-19.64 ± 8.65↑*	-15.91 ± 6.33$*#
SRs , s-1
Basal	-2.33 ± 0.34	-2.43 ± 0.44	-1.84 ± 0.41↑*	-1.73 ± 0.47$*
Middle	-1.78 ± 0.34	-1.67 ± 0.56	-1.59 ± 0.37↑*	-1.36 ± 0.31$*
Apical	-1.53 ± 0.54	-1.54 ± 0.55	-1.33 ± 0.38↑*	-1.16 ± 0.36$*
SRe , s-1
Basal	2.44 ± 0.74	2.43 ± 0.69	1.95 ± 0.49↑*	1.85 ± 0.52$*
Middle	2.04 ± 0.58	2.06 ± 0.49	1.73 ± 0.54↑*	1.66 ± 0.46$*
Apical	1.84 ± 0.69	1.83 ± 0.67	1.33 ± 0.65↑*	1.29 ± 0.55$*
SRa, s-1
Basal	1.66 ± 0.64	1.63 ± 0.66	1.44 ± 0.56↑*	1.42 ± 0.55$*
Middle	1.55 ± 0.70	1.56 ± 0.65	1.28 ± 0.41↑*	1.21 ± 0.52$*
Apical	1.88 ± 0.49	1.85 ± 0.67	1.60 ± 0.56↑*	1.54 ± 0.54$*

SRs: systolic strain rate; SRe: early diastolic strain rate; SRa: late diastolic strain rate

^$p  <0.05 vs. group A

^*p < 0.05 vs. group B

^#p < 0.05 vs. group C.