Skip to contents

Two-phase screening design for a rare subpopulation

Source: R/subpop_design.R
morie_screen_design.Rd

When the frame does not identify the subgroup, members are found by screening. This returns the expected number of screens, the expected cost, and the share of the budget spent on screening rather than on interviews.

Usage

morie_screen_design(
  prevalence,
  target_n,
  cost_screen = 1,
  cost_interview = 1,
  screen_response = 1,
  interview_response = 1
)

Arguments

prevalence

Share of screened units belonging to the subgroup.

target_n

Number of completed subgroup interviews required.

cost_screen

Cost per screening contact. Default 1.

cost_interview

Cost per completed interview. Default 1.

screen_response

Proportion of contacts that yield a screening outcome. Default 1.

interview_response

Proportion of eligible units that complete the interview. Default 1.

Value

A list with n_screen, n_eligible, cost_total, cost_per_completed_interview and screening_share_of_cost.

See also

morie_sample_size_domain

Examples

morie_screen_design(0.05, 400, cost_screen = 5, cost_interview = 120)
#> $n_screen
#> [1] 8000
#> 
#> $n_eligible
#> [1] 400
#> 
#> $cost_total
#> [1] 88000
#> 
#> $cost_per_completed_interview
#> [1] 220
#> 
#> $screening_share_of_cost
#> [1] 0.4545455
#>