TABLE II.
Muscle Degeneration at Any Study Time Point |
||||
Variable Description | Entire Cohort (N = 156) | Absent (N = 86) | Present (N = 70) | P Value |
Mean age (and standard deviation) (yr) | ||||
At time of study enrollment | 63.2 (8.7) | 61.0 (9.0) | 65.8 (7.7) | 0.0005* |
At time of 1st visit as full-thickness tear | 63.6 (8.5) | 61.4 (8.7) | 66.4 (7.5) | 0.0002* |
Study duration† (yr) | ||||
From study enrollment to most recent visit | 6.0 (5.1) | 5.9 (5.5) | 6.2 (4.7) | 0.14‡ |
From 1st visit as full-thickness tear to most recent visit | 4.2 (5.4) | 4.2 (5.1) | 5.0 (5.2) | 0.16‡ |
Sex§ (no.) | 0.04# | |||
Male | 96 (62%) | 59 (69%) | 37 (53%) | |
Female | 60 (38%) | 27 (31%) | 33 (47%) | |
Tear at 1st visit as full-thickness tear† (mm) | ||||
Width | 10.0 (9.0) | 10.0 (5.0) | 13.0 (12.0) | 0.0002‡ |
Length | 11.0 (9.0) | 10.0 (6.0) | 13.0 (15.5) | 0.0001‡ |
Tear enlargement during study period (no.) | 0.007# | |||
Yes | 105 (67%) | 50 (58%) | 55 (79%) | |
No | 51 (33%) | 36 (42%) | 15 (21%) | |
Time from tear enlargement to most recent follow-up† (yr) | 2.0 (2.9) | 1.9 (4.0) | 2.2 (2.7) | 0.22‡ |
P value is for the comparison of the absence and presence of muscle atrophy by the unpaired t test.
The values are given as the median, with the interquartile range (calculated as the 75th percentile minus the 25th percentile) in parentheses.
P value is for the comparison of the absence and presence of muscle atrophy by the Wilcoxon 2-sample test.
The values are given as the number of subjects with usable measurements.
P value is for the comparison of the proportion of patients with and without muscle atrophy with the chi-square test.