Table 3.

Comparison of the Risk for Developing Complications in Low-Risk and High-Risk Cases between all Third-year and Fourth-year Residents

Parameter	Risk	Odds Ratio (95% CI)	P*
Overall complications	High-risk (≥7)	3.45 (1.2–9.9)	0.016
	Low-risk (<7)	2.64 (1.27–5.48)	0.090
Major complications (with vitreous prolapse)	High-risk (≥7)	6.37 (1.99–20.34)	0.001
	Low-risk (<7)	2.75 (0.93–8.15)	0.058
Minor complications (without vitreous prolapse)	High-risk (≥7)	0.93 (0.25–3.48)	>0.999
	Low-risk (<7)	2.82 (1.15–6.94)	0.190

Notes: *Chi-square test; Bold figures show statistical significance (P<0.05).