Table 1.
Characteristics of study participants and their plasma samples included in proteomic platform pilot studies.
| Local volunteers (n = 12) | NHS (n = 16) | NHS II (n = 40) | |
|---|---|---|---|
| Study Sample Characteristics, N | |||
| Total samples collected | 56 | 16 | 80 |
| Anticoagulant | |||
| EDTA | 28 | 0 | 0 |
| Heparin | 28 | 16 | 80 |
| Split replicates | 28 | 0 | 0 |
| Processing delay after blood collection | |||
| No delay | 12 | 0 | 0 |
| 24-hour delay | 24 | 16 | 80 |
| 48-hour delay | 12 | 0 | 0 |
| Blood collections over time | |||
| Initial | 56 | 16 | 40 |
| Follow-up (1 year after initial) | 0 | 0 | 40 |
| Study Participant Characteristics a , N(%) | |||
| Mean age, years (range) | 39 (24–57) | 56 (43–68) | 60 (53–65) |
| Female | 9 (75.0) | 16 (100.0) | 40 (100.0) |
| Time since last meal | |||
| <8 hours | 8 (66.7) | 5 (31.3) | 6 (15.0) |
| ≥8 hours | 4 (33.3) | 11 (68.8) | 33 (82.5) |
| Unknown | 1 (2.5) | ||
| BMIb | |||
| <25 kg/m2 | 5 (31.3) | 16 (40.0) | |
| ≥25 to <30 kg/m2 | 6 (37.5) | 13 (32.5) | |
| ≥30 kg/m2 | 5 (31.3) | 11 (27.5) | |
aFor NHS II study participants, characteristics reported in first blood draw.
bBMI information was not collected from local volunteers.