Table 2 Comparative measures used in studies assessing the construct validity of the BCTQ

Symptoms

Historical-objective severity scale

Significant correlation (p < 0.001) (Mondelli et al, 2002)

Duration of symptoms

Significant correlation (p < 0.001) (Mondelli et al, 2002)

Expectation of symptom relief

0.51 (.56^§) (Bessette et al, 1998)

Symptom relief

0.51 (0.56^§) (Bessette et al, 1998)

0.59 (Katz et al, 1996)*

0.31 (Katz et al, 1996)**

0.48 (Katz et al, 1996)*

0.19 BCTQ (Katz et al, 1996)**

Nerve conduction studies

Median-nerve sensory conduction velocity

0.11 (Levine et al, 1993)

0.12 (Levine et al, 1993)

Electrophysiological study

Significant correlation (p < 0.001) (Mondelli et al, 2002)

Clinical sensory tests

Semmes-Weinstein monofilaments

0.17 (Levine et al, 1993)

0.24 (Levine et al, 1993)

2-point discrimination

0.15 (Levine et al, 1993)

0.42 (Levine et al, 1993)

Clinical motor tests

Pinch strength

0.73 (Amadio et al, 1996)

0.47 (Levine et al, 1993)

0.60 (Levine et al, 1993)

Grip strength

0.87 (Amadio et al, 1996)

0.38 (Levine et al, 1993)

0.50 (Levine et al, 1993)

Patient-based measures of function

DASH (6 wk post-operative)

0.90 (Gay et al, 2003)

DASH (12 wk pos-toperative)

0.87 (Gay et al, 2003)

Arthritis Impact Measurement Scale

0.71 (Amadio et al, 1996)

General Health Status, Quality of life and satisfaction

36-item Short-form Health Survey

0.70 (Physical role scale) (Amadio et al, 1996)

0.20 – 0.64 ^‡ (Preoperative) (Atroshi et al, 1998)

0.33 – 0.64 ^‡ (Postoperative) (Atroshi et al, 1998)

0.29 – 0.70 ^‡ (Preoperative) (Atroshi et al, 1998)

0.34 – 0.67 ^‡ (Postoperative) (Atroshi et al, 1998)

Quality of life

0.50 (0.57^§) (Bessette et al, 1998)

0.68 * (Katz et al, 1996)

0.37 ** (Katz et al, 1996)

0.54 * (Katz et al, 1996)

0.41 ** (Katz et al, 1996)

Satisfaction with the outcomes of surgery

0.56 (0.62^§) (Bessette et al, 1998)

0.69 * (Katz et al, 1996)

0.37 ** (Katz et al, 1996)

0.55 * (Katz et al, 1996)

0.21 ** (Katz et al, 1996)