AntiretroviralTherapyFull

The AntriretroviralTherapyFull intervention class begins antiretroviral therapy (ART) on the person receiving the intervention. This class is similar to the standard AntiretroviralTherapy, but enhances it with two key features: 1) a built-in delay timer such that when the delay expires, the person will come off of ART (ARTDropout should NOT be used with this intervention), and 2) persistance with the individual so the user can track this intervention using ReferenceTrackingEventCoordinator.

Additional considerations when using this intervention:

• The model will not allow someone who is HIV negative to be put on ART.
• A person who has not previously been on ART is considered to be 'starting ART' at the time this intervention is applied; the model will track this start time/duration.
• If a person is already on ART from another intervention, receiving a second ART intervention will have no effect.
• If a person is on already ART and receives the ARTMortalityTable intervention, the original ART start time will be used to calculate the duration from enrollment to ART AIDS Death. The duration since starting ART will not change; it will continue to increase.
• If a person is on ART and receives the ARTDropout intervention, the person will go off ART and the duration will be reset; if receiving a new ART intervention, this new start time/duration will be used in any calculations.

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	Type	Min	Max	Default	Description
ART_CD4_at_Initiation_Saturating_Reduction_in_Mortality	float	0	3.40282e+38	350	The duration from ART enrollment to on-ART HIV-cause death increases with CD4 at ART initiation up to a threshold determined by this parameter value. This is the maximum value that CD4 is allowed to have in the hazard ratio calculation for CD4.
ART_Is_Active_Against_Mortality_And_Transmission	boolean	0	1	1	If set to true (1), ART will suppress viral load and extend prognosis.
ART_Multiplier_On_Transmission_Prob_Per_Act	float	0	1	0.08	Multiplier acting on Base_Infectivity to determine the per-act transmission probability of a virally suppressed HIV+ individual.
ART_Survival_Baseline_Hazard_Weibull_Scale	float	1e-06	1e+06	123.83	Scale parameter for a Weibull distribution of survival time in years for a male < 40 with WHO stage of 1 or 2 starting ART (base case).
ART_Survival_Baseline_Hazard_Weibull_Shape	float	0	10	0.34	Shape parameter for a Weibull distribution of survival time in years for a male < 40 with WHO stage of 1 or 2 starting ART (base case).
ART_Survival_Hazard_Ratio_Age_Over_40Yr	float	1e-06	1e+06	1.4309	The hazard ratio comparing the survival time of those starting ART over 40 years of age compared to those starting ART <40 years.
ART_Survival_Hazard_Ratio_Body_Weight_Kg_Intercept	float	1e-06	1e+06	3.05043	The Y-intercept to use when calculating the hazard ratio for the person's body weight. The body weight is determined by WHO stage: * WHO Stage 0 = 65.0 kg * WHO Stage 1-2 = 62.1 kg * WHO Stage 2-3 = 57.0 kg * WHO Stage 3-4 = 50.0 kg * WHO Stage 4+ = 40.1 kg multiplier = exp(weight_slope * weight + weight_intercept)
ART_Survival_Hazard_Ratio_Body_Weight_Kg_Slope	float	1e-06	1e+06	-0.073153	The slope to use when calculating the hazard ratio for the person's body weight. The body weight is determined by WHO stage: * WHO Stage 0 = 65.0 kg * WHO Stage 1-2 = 62.1 kg * WHO Stage 2-3 = 57.0 kg * WHO Stage 3-4 = 50.0 kg * WHO Stage 4+ = 40.1 kg multiplier = exp(weight_slope * weight + weight_intercept)
ART_Survival_Hazard_Ratio_CD4_Intercept	float	1e-06	1e+06	0.282852	The Y-intercept to use when calculating the hazard ratio for the person based on their CD4 count. multiplier = exp(cd4_slope * cd4 + cd4_intercept)
ART_Survival_Hazard_Ratio_CD4_Slope	float	1e-06	1e+06	-0.00758256	The slope value to sue when calculating the hazard for for the person based on their CD4 count. multiplier = exp(cd4_slope * cd4 + cd4_intercept)
ART_Survival_Hazard_Ratio_Female	float	1e-06	1e+06	0.6775	The hazard ratio comparing survival female to male survival for those starting ART.
ART_Survival_Hazard_Ratio_WHO_Stage_3Plus	float	1e-06	1e+06	2.7142	The hazard ratio comparing those starting ART in WHO stage >= 3 to those in WHO stage < 3.
ART_Survival_WHO_Stage_Threshold_For_Cox	float	0	5	3	If the person receiving ART has a WHO Stage greater than or equal to this threshold, then use the hazard ratio determined by the parameter ART_Survival_Hazard_Ratio_WHO_Stage_3Plus.
Cost_To_Consumer	float	0	99999	1	Unit cost per drug (unamortized).
Days_To_Achieve_Viral_Suppression	float	0	3.40282e+38	183	The number of days after ART initiation over which infectiousness declines linearly until the ART_Multiplier_On_Transmission_Prob_Per_Act takes full effect.
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 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.
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.
Intervention_Name	string	NA	NA	AntiretroviralTherapyFull	The optional name used to refer to this intervention as a means to differentiate it from others that use the same class.
New_Property_Value	string	NA	NA	""	An optional IndividualProperty key:value pair that will be assigned when the intervention is distributed. See 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.
Stop_ART_Event	string	NA	NA	""	This event is broadcasted when the person drops off ART. This could happen either via the timer running out or the intervention detected a disqualifying property. See Event list for possible values or define custom events by adding to the list for the configuration parameter Custom_Individual_Event.
Time_On_ART_Constant	float	0	3.40282e+38	6	Each instance will receive this constant/fixed value.
Time_On_ART_Distribution	enum	NA	NA	NOT_INITIALIZED	The type of distribution to use when determine how long a person will be on ART. Possible values are: * NOT_INITIALIZED * CONSTANT_DISTRIBUTION * UNIFORM_DISTRIBUTION * GAUSSIAN_DISTRIBUTION * EXPONENTIAL_DISTRIBUTION * POISSON_DISTRIBUTION * LOG_NORMAL_DISTRIBUTION * DUAL_CONSTANT_DISTRIBUTION * WEIBULL_DISTRIBUTION * DUAL_EXPONENTIAL_DISTRIBUTION
Time_On_ART_Exponential	float	0	3.40282e+38	6	The mean for an exponential distribution.
Time_On_ART_Gaussian_Mean	float	0	3.40282e+38	6	The mean for a Gaussian distribution.
Time_On_ART_Gaussian_Std_Dev	float	1.17549e-38	3.40282e+38	1	The standard deviation for a Gaussian distribution.
Time_On_ART_Kappa	float	1.17549e-38	3.40282e+38	1	The shape value in a Weibull distribution.
Time_On_ART_Lambda	float	1.17549e-38	3.40282e+38	1	The scale value in a Weibull distribution.
Time_On_ART_Log_Normal_Mu	float	-3.40282e+38	3.40282e+38	6	The mean for a log-normal distribution.
Time_On_ART_Log_Normal_Sigma	float	-3.40282e+38	3.40282e+38	1	The width for a log-normal distribution.
Time_On_ART_Max	float	0	3.40282e+38	1	The maximum of the uniform distribution.
Time_On_ART_Mean_1	float	1.17549e-38	3.40282e+38	1	The mean of the first exponential distribution.
Time_On_ART_Mean_2	float	1.17549e-38	3.40282e+38	1	The mean of the second exponential distribution.
Time_On_ART_Min	float	0	3.40282e+38	0	The minimum of the uniform distribution.
Time_On_ART_Peak_2_Value	float	0	3.40282e+38	1	The value to assign to the remaining individuals.
Time_On_ART_Poisson_Mean	float	0	3.40282e+38	6	The mean for a Poisson distribution.
Time_On_ART_Proportion_0	float	0	1	1	The proportion of individuals to assign a value of zero.
Time_On_ART_Proportion_1	float	0	1	1	The proportion of individuals in the first exponential distribution.

{
    "Use_Defaults": 1,
    "Events": [
        {
            "Description": "New infections get immediate ART",
            "class": "CampaignEvent",
            "Start_Day": 1,
            "Nodeset_Config": {
                "class": "NodeSetAll"
            },
            "Event_Coordinator_Config": {
                "class": "StandardInterventionDistributionEventCoordinator",
                "Intervention_Config": {
                    "class": "NodeLevelHealthTriggeredIV",
                    "Trigger_Condition_List": [
                        "NewInfectionEvent"
                    ],
                    "Demographic_Coverage": 1.0,
                    "Actual_IndividualIntervention_Config": {
                        "class": "AntiretroviralTherapyFull",
                        "Days_To_Achieve_Viral_Suppression": 1000000,
                        "ART_CD4_at_Initiation_Saturating_Reduction_in_Mortality": 350,
                        "ART_Is_Active_Against_Mortality_And_Transmission": 1,
                        "ART_Survival_Hazard_Ratio_Female": 0.6775,
                        "Stop_ART_Event": "My_Custom_Event",
                        "Time_On_ART_Constant": 6,
                        "Time_On_ART_Distribution": "CONSTANT_DISTRIBUTION"
                    }
                }
            }
        }
    ]
}