Novel risk factors for primary prevention of oesophageal carcinoma: a case-control study from Sri Lanka

BMC Cancer

Table 3 Risk of oesophageal carcinoma associated with demographic, family history and socio-economic characteristics

Characteristic	Cases (N = 49)		Controls (N = 196)		Non-adjusted OR (95% CI)	Adjusted OR (95% CI)
Characteristic	No.	%	No.	%	Non-adjusted OR (95% CI)	Adjusted OR (95% CI)
Age
> 65 years	17	34.7	41	20.9	2.0 (1.2–4.0)	4.0 (1.2–14.2)
< 65 years (reference)^a	32	65.3	155	79.1	1.0	1.0
Sex
Male	34	69.4	70	35.7	4.1 (2.1–8.0)	NS^b
Female (reference)^a	15	30.6	126	64.3	1.0
Family history of cancer
Yes	11	22.4	20	10.2	2.6 (1.1–5.8)	5.0 (1.3–19.0)
No (reference)^a	38	77.6	176	89.8	1.0	1.0
Employment status
Ever employed^d	42	85.7	132	67.4	2.9 (1.2–6.8)	NS^b
Never employed (reference)^a	7	14.3	64	32.6	1.0
Social status
Low (social class III, IV & V)	46	93.9	170	86.7	2.35 (0.7–8.1)	–
High (social class I & II) (reference)^a	3	6.1	26	13.3	1.0
Monthly family income (SLR)
< 20,000	24	49.0	88	44.9	1.2 (0.6–2.2)	–
> 20,000 (reference)^a	25	51.0	108	55.1	1.0

^aThe category having the lesser proportion of cases
^bNot significant in the logistic regression model
^cPreviously employed & currently employed categories were amalgamated for univariate analysis

ISSN: 1471-2407