Table 1.
Comparisons of select patient variables for respondents versus nonrespondents
| Patient variables | Respondents (n = 56) | Nonrespondents (n = 45) | t or chi-square | Effect sizea (SMD/Phi) |
|---|---|---|---|---|
|
| ||||
| Means or proportion (%) | Means or proportion (%) | p-value | ||
| Age | 46.95 | 45.16 | 0.45 | 0.14 |
| Body mass index | 27.44 | 27.91 | 0.71 | 0.07 |
| Smoking status at the time of neurotomy (% yes) | 32.14 | 48.88 | 0.09 | −0.17 |
| Depression diagnosis (% positive) | 50.00 | 55.56 | 0.58 | −0.06 |
| Case manager (% positive) | 51.79 | 46.67 | 0.61 | 0.05 |
| Lawyer involvement (% positive) | 28.57 | 35.56 | 0.45 | −0.08 |
| Prior back/neck surgery | 0.53 | −0.12 | ||
| None | 60.71 | 62.22 | ||
| One | 14.29 | 20.00 | ||
| Two | 12.50 | 6.67 | ||
| Three or more | 12.50 | 11.11 | ||
| Prior WCF claims | 0.35 | −0.09 | ||
| None | 26.79 | 35.56 | ||
| One or more | 73.21 | 64.44 | ||
| Diagnostic nerve blocks | 0.56 | −0.06 | ||
| One | 80.36 | 75.56 | ||
| Two | 19.64 | 24.44 | ||
Notes: Omnibus chi-square = 10.87, df = 9, p = 0.29.
a
Effect sizes based upon univariate analyses.
Abbreviations: SMD, standardized mean difference; WCF, Workers’ Compensation Fund.