Therapeutic Response to Pregabalin on Ability of Patient with Fibromyalgia to Work

 

Parameters:

(1) pain improvement based on baseline and final pain scale rating on a 10 cm (100 mm) VAS pain scale

(2) final pain scale rating on a 10 cm (100 mm) VAS pain scale

 

pain improvement =

= ((initial pain reading) - (final pain reading)) / (initial pain reading) * 100

 

Parameter	Finding	Points
pain improvement	< 50%	0
	>= 50% ("improvement responder")	1
final pain scale rating	>= 30 mm	0
	< 30 mm ("state responder"	1

 

where:

• A negative value for pain improvement indicates worsening pain.

 

total response score =

= SUM(points for both parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 2

• A score of 0 was referred to as a "nonresponder".

• A score of 1 was referred to as a "state responder" or "improvement responder".

• A score of 2 was referred to as a "double responder" and was considered a good pain response.

• A person tends to show an improvement in work attendance comparable to the pain response.