Table 6 Proportion of reporting results within all studies by characteristics, 2008–2019
From: Updated analysis of pediatric clinical studies registered in ClinicalTrials.gov, 2008–2019
Trials, No.(%) | χ2 | P value | ||
|---|---|---|---|---|
Has Results (n = 6,125) | No Results Available (n = 46,935) | |||
Study type | 1,256.8 | < 0.001 | ||
Interventional | 5,403(15.0) | 30,733(85.0) | ||
observational | 722(4.3) | 15,970(95.7) | ||
Lead sponsor | 4,545.6 | < 0.001a | ||
Industry | 3,080(30.8) | 6,920(69.2) | ||
NIH | 132(15.8) | 705(84.2) | ||
US federal | 52(20.2) | 206(79.8) | ||
Other | 2,861(6.9) | 38,872(93.1) | ||
Enrollment | 29.4 | < 0.001b | ||
1–100 | 3,349(11.7) | 25,170(88.3) | ||
101–1,000 | 2,248(12.1) | 16,259(87.9) | ||
> 1,000 | 528(9.5) | 5,025(90.5) | ||
Phase | 218.8 | < 0.001 | ||
Early Phase 1-Phase 2 | 1,645(42.7) | 7,413(57.3) | ||
Phase 3-Phase 4 | 2,204(56.3) | 5,759(43.7) | ||