Explaining computation of predictive values: 2 x 2 table versus frequency tree - a randomised controlled trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN74278823

Enrollment

184

Registered

2004-08-03

Start date

2000-10-01

Completion date

Unknown

Last updated

2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Statistical analyses: patients in decision making on diagnostic procedures Not Applicable

Interventions

Comparison of two visual helps to support computations of predictive values: 2x2 table versus frequency tree

Eligibility

Inclusion criteria

Inclusion criteria: Students without prior statistical training

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Primary

Measure	Time frame
Not provided at time of registration	—

Secondary

Measure	Time frame
Not provided at time of registration	—

Countries

Germany

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 6, 2026