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Calculate Net Initiation Probabilities (Synthetic Cohort)

Source: R/calculate_net_initiation.R
calculate_net_initiation.Rd

Calculates "Net Initiation" probabilities by simulating a synthetic cohort starting at age 12. This metric represents the net flow into the "Current Smoker" state (Initiation + Relapse - Quitting) relative to the non-smoking population at each age.

It solves the issue where high initiation rates at young ages are offset by high quit rates (experimentation vs. established smoking).

Usage

calculate_net_initiation(
  init_data,
  quit_data,
  relapse_data,
  pops,
  config,
  boot_mode = FALSE
)

Arguments

init_data

Data.table. Initiation probabilities.

quit_data

Data.table. Quit probabilities.

relapse_data

Data.table. Relapse probabilities (must contain 'time_since_quit').

pops

Data.table. Population weights.

config

List. Must contain 'country' and uncertainty params ('kn', 'kn_samp', 'kR').

boot_mode

Logical. If TRUE, skips writing to disk and returns the data.table directly.

Details

Assumptions:

  • The cohort starts at age 12 with 100

  • Relapse probabilities are selected based on age-specific assumptions about average time since quitting: (12-17: 1yr, 18-24: 3yrs, 25-30: 5yrs).