Table 4 ASPREE longitudinal data completeness
From: Overcoming challenges to data quality in the ASPREE clinical trial
Data category | TOTAL missing valuesa number (% of total potential values) | Missing data (% of total potential values in category) | ||||
|---|---|---|---|---|---|---|
Visit not conducted | Third party | Participant declined | Staff/device error | Other reasons | ||
Participant demographics | 28,963 (3.5%) | 1.5% | 0% | 2.1% | < 0.1% | 0% |
Clinical information | 54,738 (2.3%) | 1.5% | 0% | 0.3% | < 0.1% | 0.4% |
Pathology | 117,206 (12.2%) | 0% | 10.2% | 0% | 0% | 2.0% |
Medications | 2428 (0.3%) | 0% | 0% | 0.1% | < 0.1% | 0.1% |
Family history | 6947 (2.4%) | 2.0% | 0% | 0.2% | 0.1% | 0% |
Cognitive measures | 47,611 (1.7%) | 1.5% | 0% | 0.3% | < 0.1% | < 0.1% |
Physical function | 21,210 (4.2%) | 2.6% | 0% | 1.5% | < 0.1% | 0% |
Mood, function and quality of life | 246,978 (3.9%) | 3.6% | 0% | 0.3% | 0.1% | < 0.1% |
Endpoints | 0 (0%) | 0% | 0% | 0% | 0% | 0% |
Study medication | 0 (0%) | 0% | 0% | 0% | 0% | 0% |
Visit conduct | 12,720 (2.7%) | 2.7% | 0% | 0% | 0% | 0% |
TOTAL | 538,801 (3.4%) | 2.2% | 0.6% | 0.4% | < 0.1% | 0.2% |