Table 1 Key simulation variables and parameters

1.1

Loss to follow up (%)

The proportion of clients that receive the first session of RESPECT but will not return for the second session

RCT

15

1.2

Risk reduction achieved (%)

The proportion of clients that will achieve their risk-reduction step

RESPECT case

72

1.3

Size of risk reduction (M; SD)

The size of the risk-reduction step achieved by the clients selected from normal distribution

RCT; RESPECT case

1; 0.5

1.4

Clients in a week (N)

The number of clients seen by one provider in a week

Project RESPECT

15

1.5

Risk decay (%)

The proportion of clients that initially achieved their risk-reduction step but experience an increase in risk

RCT

8

1.6

Size of risk decay (M; SD)

The size of the risk-reduction step achieved by the clients selected from a normal distribution

RCT; RESPECT case

1; 0.5

1.7

Repeat eligibility criteria (Months; Risk)

The criteria determining whether an individual in the population can participate in the intervention again

Project RESPECT

3; < 4