# text.div
This code system http://hl7.org/fhir/definition-method defines the following codes:

Code | Display | Definition
systematic-assessment | Systematic Assessment | Any method of routinely determining whether or not specific outcomes (e.g. adverse events) have occurred, for example through a standard questionnaire, regular investigator assessment, regular laboratory testing, or other method
non-systematic-assessment | Non-Systematic Assessment | Any non-systematic method for determining whether or not adverse events have occurred, such as self-reporting by participants or occasional assessment/testing
mean | Mean | Aggregated using mean of observed values.
median | Median | Aggregated using median of observed values.
mean-of-mean | Mean of Means | Aggregated using mean of means (e.g. study mean values).
mean-of-median | Mean of Medians | Aggregated using mean of medians (e.g. study median values).
median-of-mean | Median of Means | Aggregated using median of means (e.g. study mean values).
median-of-median | Median of Medians | Aggregated using median of medians (e.g. study median values).

# description
The method used to define, describe, or determine a characteristic value.

# concept[].definition
Any method of routinely determining whether or not specific outcomes (e.g. adverse events) have occurred, for example through a standard questionnaire, regular investigator assessment, regular laboratory testing, or other method

# concept[].definition
Any non-systematic method for determining whether or not adverse events have occurred, such as self-reporting by participants or occasional assessment/testing

# concept[].definition
Aggregated using mean of observed values.

# concept[].definition
Aggregated using median of observed values.

# concept[].definition
Aggregated using mean of means (e.g. study mean values).

# concept[].definition
Aggregated using mean of medians (e.g. study median values).

# concept[].definition
Aggregated using median of means (e.g. study mean values).

# concept[].definition
Aggregated using median of medians (e.g. study median values).