Skip to main content
. 2020 Dec 6;102(3):179–193. doi: 10.2106/JBJS.19.00680

TABLE III.

Study Cohort: Regular End of Study and Dropouts Until Week 26*

Autologous Iliac Bone-Graft Group (N = 68) CBVF Group (N = 65) Not Randomized (N = 2) Total (N = 135)
Written consent available 68 (100.0%) 65 (100.0%) 2 (100.0%) 135 (100.0%)
Safety population 62 (91.2%) 62 (95.4%) 0 (0.0%) 124 (91.9%)
Intention-to-treat population 68 (100.0%) 65 (100.0%) 0 (0.0%) 133 (98.5%)
Modified intention-to-treat population 52 (76.5%) 56 (86.2%) 0 (0.0%) 108 (80.0%)
Per-protocol population 47 (69.1%) 48 (73.8%) 0 (0.0%) 95 (70.4%)
No. of patients with major protocol violations 5 (7.4%) 8 (12.3%) 0 (0.0%) 13 (9.6%)
No. of patients with study termination 14 (20.6%) 7 (10.8%) 2 (100.0%) 23 (17.0%)
Total no. of major protocol violations 24 (100.0%) 19 (100.0%) 0 (0.0%) 43 (100.0%)
 Violation of inclusion criteria 3 (12.5%) 5 (26.3%) 0 (0.0%) 8 (18.6%)
 Meeting any exclusion criteria 3 (12.5%) 3 (15.8%) 0 (0.0%) 6 (14.0%)
 Time interval between visit 2 (day 0, surgery) and visit 7 (week 26) is not 23 to 29 weeks§ 18 (75.0%) 11 (57.9%) 0 (0.0%) 29 (67.4%)
Regular end of study 54 (79.4%) 58 (89.2%) 0 (0.0%) 112 (83.0%)
Reasons for study termination
 Withdrawal of informed consent 1 (6.7%) 1 (11.1%) 0 (0.0%) 2 (7.7%)
 Poor compliance 1 (6.7%) 1 (11.1%) 0 (0.0%) 2 (7.7%)
 Lost to follow-up 7 (50.0%) 4 (44.4%) 0 (0.0%) 11 (42.3%)
 Other interfering therapy of the study participant 4 (28.6%) 2 (22.2%) 0 (0.0%) 6 (26.9%)
 Screening error 0 (0.0%) 0 (0.0%) 1 (50.0%) 1 (3.8%)
 Administrative or regulatory reasons 0 (0.0%) 0 (0.0%) 1 (50.0%) 1 (3.8%)
 Other 1 (6.7%) 1 (11.1%) 0 (0.0%) 2 (7.7%)
*

The analysis set was the enrolled population (n = 135).

The values are given as the number of patients, with the percentage in parentheses.

There were multiple entries possible for this category.

§

This category included cases in which 1 or both visits did not take place.