Film · 1959 · Films · 1950s
Attack of the Giant Leeches
Scored from 103 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: Films · 1950s (561 peers).
Summary
Giant mutated leeches inhabit a swamp and begin attacking local residents. A group of survivors must find a way to stop the creatures and escape.
Released in 1959, Attack of the Giant Leeches is a horror and science-fiction film. Its country of origin is listed as the United States. It runs 1h 2m.
The cohort it is ranked inside is 1950s films — 561 of them. The calibrated figure is built from 103 reviewers whose rating history varies enough to place their own average. A broader pool of 103 reviewers with two or more reviews feeds the raw-average track instead. Rotten Tomatoes carries a separate audience for the same title, 127 of whom clear the calibration test.
How the score was built
We compare the reviewers of this title against every other title those same people reviewed. Each review is scored relative to the reviewer's own baseline — a 7/10 from a hard grader sits well above their average, while a 7/10 from a generous grader sits below theirs. Every reviewer then counts the same, so the result is a calibrated consensus rather than a raw average.
- Global percentile
- Where Attack of the Giant Leeches lands against every title we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — titles of the same format released in the same decade. A 1970s film is judged against 1970s films, not against last year's streaming series. Ranked against Films · 1950s (561 titles).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each title keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 103.
Cohort: Films · 1950s
