Table 2

Primary outcome measures for the treatment groups after 12 months

Primary outcome measures
Surgery (n = 73)
Splint (n = 83)
Difference*

Success rate (%)**
92% (67/73)
72% (60/83)
20% (8; 31)
# nights waking up due to complaints (0–7)**
3.6 (2.9)
2.9 (3.0)
0.7 (-0.2; 1.7)
Severity of the main complaint (0–10)**
6.4 (2.7)
5.1 (3.1)
1.3 (0.4; 2.2)
Paraesthesia during the day (0–10)**
5.5 (2.9)
4.0 (3.4)
1.5 (0.5; 2.5)
Paraesthesia at night (0–10)**
5.2 (3.6)
4.5 (3.4)
0.7 (-0.4; 1.8)
Utility (EuroQol; 0–1)***
0.85 (0.12)
0.81 (0.16)
0.04 (-0.004; 0.08)

*Presented are the difference in success rate and the differences in the mean improvements from baseline (95% confidence interval); **Presented are the success rate and the mean (standard deviation) improvements from baseline; ***Utility is scored for one year.

Korthals-de Bos et al. BMC Musculoskeletal Disorders 2006 7:86   doi:10.1186/1471-2474-7-86