Table 1.

Symptom severity scale of the Carpal Tunnel Syndrome Instrument

Item code	Scale item
SS-1	Severity of nocturnal pain
SS-2	Frequency of nocturnal awakening due to pain
SS-3	Severity of daytime pain
SS-4	Frequency of daytime pain
SS-5	Duration of daytime pain
SS-6	Severity of numbness
SS-7	Severity of weakness
SS-8	Severity of tingling
SS-9	Severity of nocturnal numbness or tingling
SS-10	Frequency of nocturnal awakening due to numbness or tingling
SS-11	Difficulty with grasping and use of small objects