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Table 3 Convergent validity. Expected and observed correlations of health-related production loss with health indicators. Different subgroups

From: Validation of a measure of health-related production loss: construct validity and responsiveness - a cohort study

Health-related production loss, Baseline, B/N Pain

Expected correlation

Observed correlation

P-value

General health

Moderate (−0.30 – -0.50)

Moderate (−0.323)a

<0.001

HRQL

Moderate (−0.30 – -0.50)

Moderate (−0.433)a

<0.001

Work ability

At least moderate (−0.30 – -0.50)

Strong (−0.638)a

<0.001

Health-related production loss, Follow-up, B/N Pain

   

General health

Moderate (−0.30 – -0.50)

Moderate (−0.404)a

<0.001

HRQL

Moderate (−0.30 – -0.50)

Moderate (−0.430)a

<0.001

Work ability

At least moderate (−0.30 – -0.50)

Strong (−0.581)a

<0.001

Health-related production loss, Baseline, CMD

   

General health

Moderate (−0.30 – -0.50)

Moderate (−0.408)a

<0.001

HRQL

Moderate (−0.30 – -0.50)

Moderate (−0.491)a

<0.001

Work ability

At least moderate (−0.30 – -0.50)

Strong (−0.690)a

<0.001

Health-related production loss, Follow-up, CMD

   

General health

Moderate (−0.30 – -0.50)

Strong (−0.558)b

<0.001

HRQL

Moderate (−0.30 – -0.50)

Moderate (−0.484)a

<0.001

Work ability

At least moderate (−0.30 – -0.50)

Strong (−0.639)a

<0.001

  1. aExpectations confirmed
  2. bCorrelations stronger than expected