Social Transfer Poverty Reduction Effect Calculator
Actual matched pre/post transfer poverty rates; signed difference, not causal transfer effectiveness without counterfactual design. Population/income definitions and applicable poverty lines independently harmonized.
Description
A pre/post-transfer poverty comparison requires matched definitions and populations.
A pre/post-transfer poverty comparison requires matched definitions and populations.1
A percentage-point reduction and a relative percentage reduction use different denominators.
When to use Social Transfer Poverty Reduction Effect Calculator
Use this tool to obtain signedPovertyReductionPercentagePoints, relativeReductionPercent from the supplied records using the stated calculation. Establish the population, period, variable definitions, sample coverage and independently applicable instrument or calibration.
How to use Social Transfer Poverty Reduction Effect Calculator and understand its results
- Establish the population, period, variable definitions, sample coverage and independently applicable instrument or calibration.
- Enter independentlyMatchedPreTransferPovertyPercent, independentlyMatchedPostTransferPovertyPercent, using the field meanings and rules below, then run the tool.
- Read result.signedPovertyReductionPercentagePoints, result.relativeReductionPercent. Use the units and sign conventions below, and review any unknown records separately.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| independentlyMatchedPreTransferPovertyPercent | Independently matched pre transfer poverty percent | number | Required |
| independentlyMatchedPostTransferPovertyPercent | Independently matched post transfer poverty percent | number | Required |
Require pre-transfer poverty percent in (0,100] and post-transfer percent in [0,100]. Subtract post from pre for percentage points and divide that difference by pre for relative percent reduction. An increased post-transfer rate retains negative reductions.
differencePoints=prePercent−postPercent; relativeReductionPercent=100×differencePoints/prePercent Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Calculated observation or qualified reference | object |
| result.signedPovertyReductionPercentagePoints | Signed Poverty Reduction Percentage Points; preserve the subtraction order and sign defined in the mechanics | number |
| result.relativeReductionPercent | Pre-minus-post poverty percentage-point difference divided by pre-transfer rate, times 100. | number |
{
"input": {
"independentlyMatchedPreTransferPovertyPercent": 30,
"independentlyMatchedPostTransferPovertyPercent": 20
},
"output": {
"result": {
"signedPovertyReductionPercentagePoints": 10,
"relativeReductionPercent": 33.333333333333336
}
}
}Limitations and assumptions
Population definitions, survey design, calibration and observation coverage are independently established. A result describes the supplied record or conditional model without demonstrating causation, validating an instrument or supplying representative population evidence.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Reynolds-Smolensky Redistribution Effect Calculator: The Reynolds–Smolensky comparison subtracts post-tax inequality from pre-tax inequality. For a complementary comparison, use Poverty Headcount Ratio Calculator: A poverty headcount rate counts assessed people below an applicable poverty line.
References
Similar or alternative tools
- Reynolds-Smolensky Redistribution Effect Calculator
The Reynolds–Smolensky comparison subtracts post-tax inequality from pre-tax inequality.
- Poverty Headcount Ratio Calculator
A poverty headcount rate counts assessed people below an applicable poverty line.