Influence of Orientation

Specific Factors

Research Limitation

Inconsistent Results

Degrading Factors

Indirect Evidence

Low Accuracy

Publication Bias

Addition or Subtraction of Prescriptions

Original Does & Composition of the Prescription

Using Shanghan Zabing Lun Prescriptions Only

Upgrading Factors

Researches and Cases from Before Year of 1979

High Effective Value

Miscellaneous factors Reducing Clinical Effect

Does-Effect Relationship