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Table 1 Risk factors of unsafe abortion in relation to socio-economic status among women with unintended pregnancies

From: Relationship of family formation characteristics with unsafe abortion: is it confounded by women’s socio-economic status? - A case–control study from Sri Lanka

Socio-economic status Cases Controls Crude OR (95 % CI) Adjusted OR (95 % CI)b
N = 171a N = 600a
No. % No. %
Secondary education       
 Not completed 115 67.6 % 332 55.5 % 1.7 (1.2–2.4) 1.5 (1.1–2.4)
 Completed (Reference) 55 32.4 % 266 44.5 % 1.00 1.00
Type of current employment       
 Unskilled/Less skilled 52 30.6 % 80 13.5 % 2.9 (1.9–4.3) 2.3 (1.4–3.6)
 Skilled 16 9.4 % 62 10.5 % 1.1 (0.6–2.0) 1.3 (0.7–2.4)
 None (Reference) 102 60.0 % 451 76.0 % 1.00 1.00
Secondary education of partner       
 Not completed 89 59.7 % 308 52.1 % 1.4 (0.9–1.9) -
 Completed (Reference) 60 40.3 % 283 47.9 % 1.00  
Partner currently employedc       
 No 5 3.1 % 3 0.5 % 6.3 (1.5–26.3)  
 Yes (Reference) 158 96.9 % 596 99.5 % 1.00 -
Type of occupation of partnerc,d       
 Unskilled/Less skilled 64 66.7 % 202 58.2 % 1.4 (0.9–2.3) -
 Skilled (Reference) 32 33.3 % 145 41.8 % 1.00  
  1. aIn some variables, row values do not add up to the total cases and controls due to missing data
  2. bAdjusted OR (odds ratio) obtained from the logistic regression analysis using education level, employment, marital status, primi, informed decision on family size and having a female child as the independent variables; cases (unsafe abortion) and controls (unintended term pregnancy) as dependent variable
  3. cNot included in the logistic regression model, as the variable either refers to only a sub-set of the sample or has smaller numbers (<10) in one category
  4. dCalculated, for the employed