The
Subject Time Trends
tab is shown below:
The
Subject Time Trends
tab contains the following elements:
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If findings test category (
xxCAT
) exists (where
xx
represents the two letter domain abbreviation -- for example,
LB
), these plots are first ordered by
xxCAT
. Next, if findings test subcategory (
xxSCAT
) exists, plots are secondarily ordered by
xxSCAT
. If
xxCAT
is missing, plots are ordered by test short name (
xxTESTCD
), which is required. Findings tests with a missing
xxCAT
value are assigned to the “
OTHER
” category.
Note
: Findings tests with a missing numeric result (
xxSTRESN
), as well as those taken on only one day, are excluded from these plots.
Tip
: You can collapse categories (and simultaneously exclude them from any report that you create) by clicking on the
gray triangles
located to the left of the category labels.
Each plot displays the measurements taken across time for each subject in a study for a quantitative findings test. The value of
xxTEST
is displayed in the outline box for each plot and the test short name (
xxTESTCD
) is displayed along with the measurement units (where applicable) on the
y
-axis. The
y
-axis can represent the observed test result, the change from baseline, percent change from baseline, or percent of baseline, depending on the selection made for the
Plot findings measurements as:
parameter on the process
dialog
. Time, as either Study Day, Study Week, or Visit, is plotted on the
x
-axis (according to your
Time Scale
selection). Time trend lines connect the points of measurement; each marker point represents the findings measurement for each subject at the measured time point. If multiple measurements were taken for a subject on the same Study Day, Study Week, or Visit, the point represents the
mean
measurement for that subject.
The
y
-axis can optionally be displayed with
log scaling
(this is very useful for interpreting laboratory findings). For the
LB
domain, you can also choose to draw
reference limits
by checking the
Show ULN and LLN reference lines for lab tests
option on the dialog. If there are multiple reference limits for a lab test, the maximum ULN (as measured by
LBSTNRHI
) and the minimum LLN (
LBSTNRLO
) are displayed.
The time trend lines are
interactive
. Selecting a line selects that subject. You can then use the drill down buttons to profile, cluster, or show selected subjects, or create a subject filter to do further analysis only with the selection of subjects.