IVCalendar

The IVCalendar intervention class contains a list of ages when an individual will receive the actual intervention. In IVCalendar, there is a list of actual interventions where the distribution is dependent on whether the individual’s age matches the next date in the calendar. This implies that at a certain age, the list of actual interventions will be distributed according to a given probability. While a typical use case might involve the distribution of calendars by a BirthTriggeredIV in the context of a routine vaccination schedule, calendars may also be distributed directly to individuals.

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
Actual_IndividualIntervention_Configs	array of json objects	NA	NA	NA	An array of interventions that will be distributed as specified in the calendar. This parameter selects a class for the intervention and configures the parameters specific for that intervention class.	{ "Actual_IndividualIntervention_Config": { "class": "IVCalendar", "Actual_IndividualIntervention_Configs": [ { "class": "BCGVaccine", "Cost_To_Consumer": 10, "Vaccine_Take": 1, "Vaccine_Take_Age_Decay_Rate": 0, "Waning_Config": { "Initial_Effect": 1, "Box_Duration": 3650, "Decay_Rate_Factor": 3650, "class": "WaningEffectBoxExponential" } } ] } }
Calendar	array of json objects	NA	NA	[]	An array of JSON objects where each object specifies the age and probability of receiving the interventions. The parameters of the Calendar objects are: Age The age (in days) that the individual must be in order to receive the list of actual interventions. Probability The probability of an individual receiving the list of actual interventions at the corresponding age.	{ "Calendar": [ { "Age": 60, "Probability": 1 }, { "Age": 120, "Probability": 1 }, { "Age": 180, "Probability": 1 }, { "Age": 510, "Probability": 0.9 }, { "Age": 1825, "Probability": 0.95 }, { "Age": 4200, "Probability": 0.95 } ] }
Disqualifying_Properties	array of strings	NA	NA	[]	A list of IndividualProperty key:value pairs that cause an intervention to be aborted (persistent interventions will stop being distributed to individuals with these values). See NodeProperties and IndividualProperties parameters for more information. Generally used to control the flow of health care access. For example, to prevent the same individual from accessing health care via two different routes at the same time.	{ "Disqualifying_Properties": [ "InterventionStatus:LostForever" ] }
Dont_Allow_Duplicates	boolean	0	1	0	If an individual’s container has an intervention, set to true (1) to prevent them from receiving another copy of the intervention. Supported by all intervention classes.	{ "Dont_Allow_Duplicates": 0 }
Dropout	boolean	0	1	0	If set to true (1), when an intervention distribution is missed, all subsequent interventions are also missed. If set to false (0), all calendar dates/doses are applied independently of each other.	{ "Actual_IndividualIntervention_Config": { "class": "IVCalendar", "Dont_Allow_Duplicates": 0, "Dropout": 0, "Calendar": [ { "Age": 12045, "Probability": 1 } ] } }
Intervention_Name	string	NA	NA	IVCalendar	The optional name used to refer to this intervention as a means to differentiate it from others that use the same class.	{ "Intervention_Config": { "class": "IVCalendar", "Intervention_Name": "Routine measles vaccination schedule" } }
New_Property_Value	string	NA	NA	NA	An optional IndividualProperty key:value pair that will be assigned when the intervention is applied. See NodeProperties and IndividualProperties parameters for more information. Generally used to indicate the broad category of health care cascade to which an intervention belongs to prevent individuals from accessing care through multiple pathways. For example, if an individual must already be taking a particular medication to be prescribed a new one.	{ "New_Property_Value": "InterventionStatus:None" }

{
    "Use_Defaults": 1,
    "Campaign_Name": "BCG vaccination calendar distributed at birth",
    "Events": [{
        "Event_Name": "BCG vaccinations scheduled at birth",
        "class": "CampaignEvent",
        "Nodeset_Config": {
            "class": "NodeSetAll"
        },
        "Start_Day": 1825,
        "Event_Coordinator_Config": {
            "class": "StandardInterventionDistributionEventCoordinator",
            "Target_Demographic": "Everyone",
            "Intervention_Config": {
                "class": "BirthTriggeredIV",
                "Demographic_Coverage": 0.9,
                "Actual_IndividualIntervention_Config": {
                    "class": "IVCalendar",
                    "Calendar": [{
                            "Age": 30,
                            "Probability": 1
                        },
                        {
                            "Age": 3650,
                            "Probability": 1
                        }
                    ],
                    "Dropout": 0,
                    "Actual_IndividualIntervention_Configs": [{
                        "class": "BCGVaccine",
                        "Cost_To_Consumer": 8,
                        "Vaccine_Take": 0.8,
                        "Vaccine_Take_Age_Decay_Rate": 0.2,
                        "Waning_Config": {
                            "Initial_Rate": 0.9,
                            "Decay_Time_Constant": 3650,
                            "class": "WaningEffectExponential"
                        }
                    }]
                }
            }
        }
    }]
}