HIV without dynamics¶

Name: HIV without dynamics

Description: Framework for an HIV model, without vital dynamics or new infections

Contents¶

Compartments
Characteristics
Parameters
Interactions
Cascades

Compartments¶

Compartment: Undiagnosed¶

Code name: undx
Does not appear in the databook
Description:
Data entry guidance:

Compartment: Diagnosed¶

Code name: dx
Does not appear in the databook
Description:
Data entry guidance:

Compartment: Linked to care¶

Code name: linked
Does not appear in the databook
Description:
Data entry guidance:

Compartment: Treated¶

Code name: tx
Does not appear in the databook
Description:
Data entry guidance:

Compartment: Lost to follow-up¶

Code name: lost
Does not appear in the databook
Description:
Data entry guidance:

Compartment: Virally suppressed (comp)¶

Code name: vs
Does not appear in the databook
Description:
Data entry guidance:

Characteristics¶

Characteristic: All PLHIV¶

Code name: all_people
Value can be used for calibration
Includes:
- Undiagnosed
- Diagnosed
- Linked to care
- Treated
- Lost to follow-up
- Virally suppressed (comp)
Appears in the databook
Databook values will be used for model initialization
Description:
Data entry guidance:

Characteristic: Aware of their status¶

Code name: all_dx
Value can be used for calibration
Includes:
- Diagnosed
- Linked to care
- Treated
- Lost to follow-up
- Virally suppressed (comp)
Appears in the databook
Databook values will be used for model initialization
Description:
Data entry guidance:

Characteristic: Ever in care¶

Code name: all_ever_linked
Value can be used for calibration
Includes:
- Linked to care
- Treated
- Lost to follow-up
- Virally suppressed (comp)
Appears in the databook
Databook values will be used for model initialization
Description:
Data entry guidance:

Characteristic: Currently in care¶

Code name: all_curr_linked
Value can be used for calibration
Includes:
- Linked to care
- Treated
- Virally suppressed (comp)
Appears in the databook
Databook values will be used for model initialization
Description:
Data entry guidance:

Characteristic: Currently treated¶

Code name: all_tx
Value can be used for calibration
Includes:
- Treated
- Virally suppressed (comp)
Appears in the databook
Databook values will be used for model initialization
Description:
Data entry guidance:

Characteristic: Virally suppressed¶

Code name: all_vs
Value can be used for calibration
Includes:
- Virally suppressed (comp)
Appears in the databook
Databook values will be used for model initialization
Description:
Data entry guidance:

Parameters¶

Parameter: Annual number of new diagnoses¶

Code name: num_diag
Units/format: number
Value restrictions: At least 0
Default value: None
Appears in the databook
Used to compute:
- “Diagnosis rate”
Description:
Data entry guidance:

Parameter: Diagnosis rate¶

Code name: diag
Value can be used for calibration
Units/format: probability
Value restrictions: 0-1.0000
Contributes to transitions from:
- “Undiagnosed” to “Diagnosed”
Default value: None
Does not appear in the databook
This parameter’s value is computed by a function: num_diag/max(undx,num_diag)
Depends on:
- “Undiagnosed”
- “Annual number of new diagnoses”
Description:
Data entry guidance:

Parameter: Average time taken to be linked to care (years)¶

Code name: link_time
Value can be used for calibration
Units/format: duration
Value restrictions: At least 0
Contributes to transitions from:
- “Diagnosed” to “Linked to care”
- “Lost to follow-up” to “Linked to care”
Default value: None
Appears in the databook
Description:
Data entry guidance:

Parameter: Annual number newly initiated onto treatment¶

Code name: num_initiate
Units/format: number
Value restrictions: At least 0
Default value: None
Appears in the databook
Used to compute:
- “Initiation rate”
Description:
Data entry guidance:

Parameter: Initiation rate¶

Code name: initiate
Value can be used for calibration
Units/format: probability
Value restrictions: 0-1.0000
Contributes to transitions from:
- “Linked to care” to “Treated”
Default value: None
Does not appear in the databook
This parameter’s value is computed by a function: num_initiate/max(linked,num_initiate)
Depends on:
- “Linked to care”
- “Annual number newly initiated onto treatment”
Description:
Data entry guidance:

Parameter: Loss-to-follow-up rate¶

Code name: loss
Value can be used for calibration
Units/format: probability
Value restrictions: 0-1.0000
Contributes to transitions from:
- “Linked to care” to “Lost to follow-up”
- “Treated” to “Lost to follow-up”
- “Virally suppressed (comp)” to “Lost to follow-up”
Default value: None
Appears in the databook
Description:
Data entry guidance:

Parameter: Time after initiating ART to achieve viral suppression (years)¶

Code name: supp_rate
Units/format: duration
Value restrictions: At least 0
Contributes to transitions from:
- “Treated” to “Virally suppressed (comp)”
Default value: 0.2
Appears in the databook
Description:
Data entry guidance:

Parameter: Treatment failure rate¶

Code name: fail_rate
Value can be used for calibration
Units/format: probability
Value restrictions: 0-1.0000
Contributes to transitions from:
- “Virally suppressed (comp)” to “Treated”
Default value: 0.16
Appears in the databook
Description:
Data entry guidance:

Interactions¶

Cascades¶

Cascade: main¶

Description:
Stages:
- All PLHIV
  - All PLHIV
- Aware of their status
  - Aware of their status
- Ever in care
  - Ever in care
- Currently in care
  - Currently in care
- Currently treated
  - Currently treated
- Virally suppressed
  - Virally suppressed