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Table 4 Truth Table for Soft Mandate / Other QCA (n = 20 cases)

From: ‘Leading from the front’ implementation increases the success of influenza vaccination drives among healthcare workers: a reanalysis of systematic review evidence using Intervention Component Analysis (ICA) and Qualitative Comparative Analysis (QCA)

Strong Leader-ship Support

Don’t go in cold

Two-way engage-ment

Edu-cation Com-ponent

Letter

Outcome

Number of Studies

Consistency

PRI

Cases

1

1

1

1

0

1

4

1

1

Thomas, Lavela, Heinrich, LeMaitre

0

0

0

1

1

1

1

1

1

Shannon

0

1

1

1

1

1

1

1

1

Sadlier

1

1

0

1

0

1

1

1

1

Ribner

1

1

0

1

1

1

1

1

1

Lopes

1

1

1

0

0

1

1

1

1

Honda

1

1

1

1

1

1

1

1

1

Guanche Garcel

0

1

0

1

0

0

4

0

0

Doratoraj a (letter), Camarago, Zimmerman a (incentives), Zimmerman b (increased access)

0

0

1

1

0

0

2

0

0

Dey a, Dey b

0

0

0

1

0

0

1

0

0

Leitmeyer

0

1

0

0

0

0

1

0

0

Doratoraj b (raffle)

0

1

1

1

0

0

1

0

0

Smedley

1

0

0

1

0

0

1

0

0

Rothan-Tondeur (educ only)

  1. PRI Proportional Reduction in Inconsistency – a measure of how well a configuration distinguishes between the outcome and its negation