Table 3.

Multivariate analysis of age category variables

Variables (age)	Walds (df)	Adjusted	P value	95% CI
		OR		Lower	Upper
Group A: 21 to 30 yr	11.021 (4)		0.026a
Group B: 31 to 40 yr	4.664 (1)	11	0.031a	1.248	96.951
Group C: 41 to 50 yr	5.236 (1)	7	0.022a	1.322	37.066
Group D: 51 to 60 yr	3.741 (1)	5.25	0.053	0.978	28.182
Group E: > 60 yr	3.884 (1)	9	0.049a	1.012	28.182

^aP < 0.05 was considered as significant at the 95% confidence level. OR: Odds ratio.