Table A3.

Sensitivity Analyses.

Source of Uncertainty	Alternative Values/Scenarios	Recommended Sensitivity Analysis
Methodological
Discount factor	Local/national level discount factor; differential discount factors for costs and outcomes	Deterministic uni- and multivariate
PPP	World Bank PPPs, and VAWG prevention-specific PPP, where interventions are sufficiently similar	Deterministic uni- and multivariate
Time horizon	Lifetime	Probabilistic
Perspective	Societal	Probabilistic
Valuing the time of free human resources	Types of time forgone	If the volunteer is unemployed, analysts will use the gross wage in the volunteer’s potential occupational group; the individual’s gross wage, if he or she works part-time and volunteers the rest of the work time; the individual’s net wage if he or she is employed but volunteers his or her free time (Posnett & Jan, 1996).
Parameter
VAWG exposure	Vary based on evidence; expert opinion and best- or worst-case scenario	Deterministic uni- and multivariate; threshold analysis and probabilistic sensitivity analysis
DALY impact
Cost of treatment
Precision of parameter estimates (stochastic uncertainty)		Monte Carlo simulations
Subgroups with heterogeneous cost-effectiveness
Age		Multivariable sensitivity analysis to test robustness. Could include analysis where robustness of results is tested across the entire distribution (e.g., quintile regressions).
Gender
Baseline exposure to VAWG
VAWG risk factors
Alcohol consumption  Mental health issues  Small children  Pregnancy  Age at sexual debut  Age at marriage  Employment status
Urbanicity
Site accessibility

Note. PPP = purchasing power parity; VAWG = violence against women and girls; DALY = disability-adjusted life year.