Skip to main content
. 2024 Jan 6;14(1):e071300. doi: 10.1136/bmjopen-2022-071300

Table 1.

Model input parameters: probabilities

Parameter Base case value Lower limit Upper limit Distribution Source
Probabilities
 Proportion of people experiencing abuse—all ages 0.055 0.038 0.106 Beta Adjusted estimate*
 Prevalence of DVA in adults (males and females)—aged 16–90+ years 0.055 0.036 0.073 Beta 14
 Prevalence of children exposed to DVA 0.080 0.040 0.140 Beta 24
Starting distribution for those experiencing abuse—all ages
 Abused and identified, seeing advocate 0.003 0 0.0066 Uniform
 Abused and identified, not seeing advocate 0.033 0 0.0660 Uniform
 Abused but not identified 0.964 Uniform Complement
Transition probabilities—intervention and control
 Not abused to abused but not identified 0.0037 0.0004 0.0106 Dirichlet
 Not abused to dead 0.0052 0.0027 0.0087 Dirichlet 14
 Stay in not abused 0.9911 Dirichlet Complement
 Abused and identified, seeing advocate to not abused 0.1408 0.0707 0.2301 Dirichlet 27
 Abused and identified, seeing advocate to dead 0.0052 0.0000 0.0299 Dirichlet 14
 Stay in Abused and identified, seeing advocate 0.8540 Dirichlet Complement
 Abused and identified, not seeing advocate to not abused 0.0781 0.0136 0.1912 Dirichlet 27
 Abused and identified, not seeing advocate to dead 0.0052 0.0000 0.0424 Dirichlet 14
 Stay in abused and identified, not seeing advocate 0.9167 Dirichlet Complement
Transition probabilities—intervention
 Abused but not identified to not abused 0.0500 0.0412 0.0596 Dirichlet
 Abused but not identified to abused and identified, not seeing advocate 0.0374 0.0298 0.0458 Dirichlet IRIS+ data
 Abused but not identified to abused and identified, seeing advocate 0.0312 0.0243 0.0390 Dirichlet IRIS+ data
 Abused but not identified to dead 0.0055 0.0029 0.0091 Dirichlet 14
 Stay in abused but not identified 0.8762 Dirichlet Complement
Transition probabilities—control
 Abused but not identified to not abused 0.0500 0.0412 0.0596 Dirichlet
 Abused but not identified to abused and identified, not seeing advocate 0.0091 0.0055 0.0135 Dirichlet IRIS data
 Abused but not identified to abused and identified, seeing advocate 0.0226 0.0168 0.0293 Dirichlet IRIS data
 Abused but not identified to dead 0.0055 0.0029 0.0091 Dirichlet 14
 Stay in abused but not identified 0.9131 Dirichlet Complement

*Weighted average for adults and children.

†Internal calculation based on model calibration.

DVA, domestic violence/abuse; IRIS+, Identification and Referral to Improve Safety plus.