AgeDiagnostic

The AgeDiagnostic intervention class identifies the age threshold of individuals. The minimum and maximum age ranges are configured (for example, 0-5 and 5-20), and the event is based on the resulting age of the individuals. This intervention should be used in conjunction with StandardInterventionDistributionEventCoordinator.

Note

Parameters are case-sensitive. For Boolean parameters, set to 1 for true or 0 for false. Minimum, maximum, or default values of “NA” indicate that those values are not applicable for that parameter.

EMOD does not use true defaults; that is, if the dependency relationships indicate that a parameter is required, you must supply a value for it. However, many of the tools used to work with EMOD will use the default values provided below.

JSON format does not permit comments, but you can add “dummy” parameters to add contextual information to your files. Any keys that are not EMOD parameter names will be ignored by the model.

The table below describes all possible parameters with which this class can be configured. The JSON example that follows shows one potential configuration.

Parameter

Data type

Minimum

Maximum

Default

Description

Example

Age_Thresholds

array of JSON objects

NA

NA

NA

Used to associate age ranges for individuals.

{
    "class": "AgeDiagnostic",
    "Age_Thresholds": [
        {
            "Low": 0,
            "High": 15,
            "Event": "AgeMeasured0"
        }
    ]
}

Base_Sensitivity

float

0

1

1

The sensitivity of the diagnostic. This sets the proportion of the time that individuals with the condition being tested receive a positive diagnostic test. When set to 1, the diagnostic always accurately reflects the condition. When set to zero, then individuals who have the condition always receive a false-negative diagnostic test.

{
    "Base_Sensitivity": 0.8
}

Base_Specificity

float

0

1

1

The specificity of the diagnostic. This sets the proportion of the time that individuals without the condition being tested receive a negative diagnostic test. When set to 1, the diagnostic always accurately reflects the lack of having the condition. When set to zero, then individuals who do not have the condition always receive a false-positive diagnostic test.

{
    "Base_Specificity": 0.9
}

Cost_To_Consumer

float

0

3.40282e+38

1

The unit ‘cost’ assigned to the diagnostic. Setting Cost_To_Consumer to zero for all other interventions, and to a non-zero amount for one intervention, provides a convenient way to track the number of times the intervention has been applied in a simulation.

{
    "Cost_To_Consumer": 0.333
}

Days_To_Diagnosis

float

0

3.40282e+38

0

The number of days from when test until positive diagnosis. A negative test result is given immediately when the intervention is distributed.

{
    "Days_To_Diagnosis": 0.0
}

Enable_Is_Symptomatic

boolean

0

1

0

If true (1), requires an infection to be symptomatic to return a positive test.

{
    "Enable_Is_Symptomatic": 1,
    "Base_Specificity": 0.85,
    "Base_Sensitivity": 0.92
}

Event

string

NA

NA

“”

The user-defined name of the diagnostic event.

{
    "class": "AgeDiagnostic",
    "Age_Thresholds": [
        {
            "Low": 0,
            "High": 15,
            "Event": "AgeMeasured0"
        }
    ]
}

High

float

0

1000

NA

The high end of the age grouping.

{
    "class": "AgeDiagnostic",
    "Age_Thresholds": [
        {
            "Low": 0,
            "High": 15,
            "Event": "AgeMeasured0"
        }
    ]
}

Low

float

0

1000

NA

The low end of the age grouping.

{
    "class": "AgeDiagnostic",
    "Age_Thresholds": [
        {
            "Low": 0,
            "High": 15,
            "Event": "AgeMeasured0"
        }
    ]
}

Treatment_Fraction

float

0

1

1

The fraction of positive diagnoses that are treated or given the Positive_Diagnosis_Config or Positive_Diagnosis_Event when used in campaign classes that trigger separate interventions or events upon a positive diagnosis.

{
    "Intervention_Config": {
        "class": "SimpleDiagnostic",
        "Base_Sensitivity": 1.0,
        "Base_Specificity": 1.0,
        "Cost_To_Consumer": 0.0,
        "Days_To_Diagnosis": 0.0,
        "Event_Or_Config": "Event",
        "Positive_Diagnosis_Event": "TestedPositive_CureMeNow",
        "Treatment_Fraction": 1.0
    }
}
{
    "Use_Defaults": 1,
    "Events": [
        {
            "class": "CampaignEvent",
            "Start_Day": 360,
            "Nodeset_Config":
            {
                "class": "NodeSetAll"
            },

            "Event_Coordinator_Config":
            {
                "class": "StandardInterventionDistributionEventCoordinator",
                "Demographic_Coverage": 1,
                "Intervention_Config":
                {
                    "class": "AgeDiagnostic",
                    "Age_Thresholds": [
                        {
                            "Low": 0,
                            "High": 15,
                            "Event": "AgeMeasured0"
                        },
                        {
                            "NOTE": "Age ranges need not be exclusive.  This event and the next will ffire for a 20 year old.",
                            "Low": 15,
                            "High": 25,
                            "Event": "AgeMeasured1"
                        },
                        {
                            "Low": 15,
                            "High": 50,
                            "Event": "AgeMeasured2"
                        },
                        {
                            "Low": 50,
                            "High": 100,
                            "Event": "AgeMeasured3"
                        }
                    ]
                }
            }
        }
    ]
}