Odds ratio, relative risk, risk difference and number needed to treat from a 2x2
Odds ratio, relative risk, risk difference and number needed to treat from a 2x2 table, each with a confidence interval.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
418 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://stats-tests.x402tookit.com/effect-size-2x2
| Category | Everything else |
|---|---|
| Provider host | stats-tests.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.02 | 418 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"exposedEvents": 20,
"exposedNoEvents": 80,
"unexposedEvents": 10,
"unexposedNoEvents": 90
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"confidence": {
"description": "0.8 to 0.999 (default 0.95)",
"type": "number"
},
"exposedEvents": {
"description": "Events in the exposed (or treated) group",
"type": "integer"
},
"exposedNoEvents": {
"description": "Non-events in the exposed group",
"type": "integer"
},
"unexposedEvents": {
"description": "Events in the unexposed (or control) group",
"type": "integer"
},
"unexposedNoEvents": {
"description": "Non-events in the unexposed group",
"type": "integer"
}
},
"required": [
"exposedEvents",
"exposedNoEvents",
"unexposedEvents",
"unexposedNoEvents"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"confidence": {
"type": [
"null",
"number"
]
},
"correctionApplied": {
"type": [
"boolean",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"direction": {
"type": [
"null",
"string"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"numberNeededToTreat": {
"type": [
"null",
"number"
]
},
"oddsRatio": {
"type": [
"null",
"number"
]
},
"oddsRatioCI": {
"properties": {
"lower": {
"type": [
"null",
"number"
]
},
"upper": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"relativeRisk": {
"type": [
"null",
"number"
]
},
"relativeRiskCI": {
"properties": {
"lower": {
"type": [
"null",
"number"
]
},
"upper": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"riskDifference": {
"type": [
"null",
"number"
]
},
"riskDifferenceCI": {
"properties": {
"lower": {
"type": [
"null",
"number"
]
},
"upper": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"riskExposed": {
"type": [
"null",
"number"
]
},
"riskUnexposed": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}