Skip to main content
. 2021 Jul 19;11(7):e053248. doi: 10.1136/bmjopen-2021-053248

Table 5.

Bivariate associations of company characteristics with clinical trial transparency measures

Transparency measure Company size Company location Product type
Large Non-large P value US Non-US P value Biologic Drug P value
Public availability of all trials median company score (IQR) 79 (55–93) 39 (27–74) 0.07 39 (32–91) 64 (54–84) 0.25 85 (62–100) 47 (32–82) 0.005
Public availability of patient trials median company score (IQR) 100 (93–100) 100 (67–100) 0.21 100 (80–100) 100 (82–100) 0.64 100 (83–100) 100 (86–100) 0.63
FDAAA compliance median company score (IQR) 100 (88–100) 57 (0–100) 0.01 86 (50–100) 95 (70–100) 0.55 100 (87–100) 100 (50–100) 0.24
Data sharing score median company score (IQR) 100 (80–100) 20 (20–40) <0.001 50 (20–80) 89 (20–100) 0.28 NA NA NA
Overall score median company score (IQR) 96 (91–100) 59 (41–70) <0.001 73 (54–90) 79 (59–100) 0.24 NA NA NA

Data sharing score reflects scores after 30-day amendment period. Mann-Whitney U tests used to determine association between outcome measures and company size, company location and product type. Additional details on company size, company location and products are provided in online supplemental table 4.

FDAAA, Food and Drug Administration Amendments Act; NA, not applicable.