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. Author manuscript; available in PMC: 2015 Mar 16.
Published in final edited form as: Pac Symp Biocomput. 2015:68–79.

Table 3.

Comparison of combination trials and non-combination trials in oncology and non-oncology


Non-Oncology Combination Oncology Combination Oncology Non-Combination
Funded By(a) n=4480 n=3753 n=10899

Industry 3086 (68.9%) 1839 (49.0%) 3946 (36.2%)
NIH 230 (5.1%) 853 (22.7%) 1205 (11.1%)
Other 1654 (36.9%) 2318 (61.8%) 8195 (75.2%)
U.S. Fed 39 (0.9%) 14 (0.4%) 90 (0.8%)

Primary Purpose n=4217 n=3732 n=10545

Basic Science 236 (5.6%) 13 (0.3%) 148 (1.4%)
Diagnostic 44 (1.0%) 12 (0.3%) 858 (8.1%)
Health Services Research 9 (0.2%) 1 (0.03%) 97 (0.9%)
Prevention 458 (10.9%) 34 (0.9%) 508 (4.8%)
Screening 6 (0.1%) 3 (0.08%) 145 (1.4%)
Supportive Care 43 (1.0%) 30 (0.8%) 597 (5.7%)
Treatment 3421 (81.1%) 3639 (97.5%) 8192 (77.7%)

Endpoint Measures n=4179 n=3311 n=9202

Bio-availability Study 63 (1.5%) 4 (0.1%) 24 (0.3%)
Bio-equivalence Study 95 (2.3%) 0 (0%) 52 (0.6%)
Efficacy Study 809 (19.4%) 795 (24.0%) 3051 (33.2%)
Pharmacodynamics 78 (1.9%) 7 (0.2%) 86 (0.9%)
Pharmacokinetics 425 (10.2%) 24 (0.7%) 103 (1.1%)
Pharmacokinetics/Dynamics 137 (3.3%) 12 (0.4%) 71 (0.8%)
Safety Study 437 (10.7%) 492 (14.9%) 947 (10.3%)
Safety/Efficacy Study 2135 (51.1%) 1977 (59.7%) 4868 (52.9%)

Allocation n=4176 n=2413 n=6142

Non-Randomized 563 (13.5%) 795 (33.0%) 2189 (35.6%)
Randomized 3613 (86.5%) 1618 (67.0%) 3953 (64.4%)

Phase n=4134 n=3634 n=8530

Phase 0 12 (0.3%) 15 (0.4%) 180 (2.1%)
Phase 1 1114 (27.0%) 778 (21.4%) 1657 (19.4%)
Phase 1/Phase 2 133 (3.2%) 582 (16.0%) 896 (10.5%)
Phase 2 851 (20.6%) 1655 (45.5%) 3950 (46.3%)
Phase 2/Phase 3 88 (2.1%) 52 (1.4%) 201 (2.4%)
Phase 3 1136 (27.5%) 499 (13.7%) 1183 (13.9%)
Phase 4 800 (19.4%) 53 (1.5%) 463 (5.4%)
(a)

The sum of percentages exceed 100 because trials may be funded by more than agencies