Effect of socioeconomic status on urgency of inguinal hernia repair in patients in Vancouver, BC, 2012–2016
| Socioeconomic status (quantiles of VANDIX score) | No. (%) of patients undergoing elective surgical repair n = 294 | No. (%) of patients who received emergent surgical repair n = 98 | Odds ratio* (95% CI) | p value† |
|---|---|---|---|---|
| Q1 = −2.96 to −0.49 (least deprived) | 96 (40.0) | 27 (33.8) | 1.30 (0.93 to 1.82) | 0.122 |
| Q2 = −0.49 to −0.22 | 44 (18.3) | 17 (21.3) | ||
| Q3 = −0.22 to 0.06 | 47 (19.6) | 13 (16.3) | ||
| Q4 = 0.06 to 0.42 | 31 (12.9) | 12 (15.0) | ||
| Q5 = 0.42 to 4.43 (most deprived) | 22 (9.2) | 11 (13.8) |
CI = confidence interval; VANDIX = Vancouver Area Neighbourhood Deprivation Index.
↵* Post hoc repeated 10-fold cross-validation found an overall accuracy of 75.0%, but a Cohen κ of 1.0%, suggesting that the VANDIX score has almost no additional predictive accuracy than what would be expected from chance alone.
↵† The odds ratio represents the change associated with each unit increase in the VANDIX score.