. 2018 Jun;57(2):335–341. doi: 10.20471/acc.2018.57.02.15

Table 2. Ultrasound measurements of supraspinatus thickness in mm, CSA of muscle and supraspinatus fossa in cm² and calculated occupation ratio with t-test between groups, and 95% confidence interval (95% CI).

Ultrasound measurement	Group 1 – with rupture (n=43)	Group 2 – no rupture (n=44)	t-test	Between group differences Rupture minus non-rupture, mean (SD) (95% CI)
Supraspinatus thickness (mm), mean (SD)	14.01 (1.63)	19.83 (2.52)	12.73	-5.82 (-6.73 to -4.91)
CSA of the muscle (cm²), mean (SD)	2.66 (0.67)	4.78 (1.17)	10.25	-2.12 (-2.53 to -1.71)
CSA of the supraspinatus fossa (cm²), mean (SD)	6.64 (1.31)	6,92 (1.37)	0.96	-0.28 (-0.85 to 0.29)
Occupation ratio, mean (SD)	0.40 (0.07)	0.69 (0.06)	20.06	-0.28 (-0.31 to -0.26)

CSA = cross-sectional area; SD = standard deviation

Table 2. Ultrasound measurements of supraspinatus thickness in mm, CSA of muscle and supraspinatus fossa in cm2 and calculated occupation ratio with t-test between groups, and 95% confidence interval (95% CI).