Activated partial thromboplastin time¶
Activated partial thromboplastin time (lab table).
| Name in the dataset | aptt |
| Type | lab |
| Stored in | lab_data.csv |
| Stamped by | Hospital records clock |
| Unit | sec |
Description¶
Single resolution; last digit flat.
Its time is the lab system's result time: see Blood gas result time and Central lab result time.
Measurement space¶
A vertical slice through the measurement space: how the true value is spread around any one recorded value. Its shape is uniform.
Time¶
Its time side is still to be described.
Value¶
| Model kind | uniform: single resolution; uniform over the rounding interval |
| Resolution | 0.1 sec, nearest |
| Native step | 0.1 sec |
| Anchor | nearest (convention) |
In this release¶
How wide the true-value distribution is, record by record, over 1,965 of 1,977 records (every lab row of 600 random cases) that have one. Computed with the pinned model, aggregates only.
| Median | p10 to p90 | |
|---|---|---|
| Standard deviation | 0.0289 sec | 0.0289 to 0.0289 sec |
| 95% interval width | 0.095 sec | 0.095 to 0.095 sec |
| Mean minus recorded | 0 sec | 0 to 0 sec |
Anchor¶
Laboratory results rounded to the last reported digit; at most half the last digit. See what an anchor is and every variable's anchor.
Observations¶
| Observation | Status | Summary |
|---|---|---|
| Three lab analytes stop at a reporting limit | likely | Lactate is capped at 15.0 mmol/L, aPTT at 400.0 s, and ESR does not go below 2 mm/h: the values at the limit stand for "this or beyond", not for the number itself. |
Figures¶
Tags: generated, vitaldb-resolution