Table 2 Crude and Adjusted Incidence Risk Ratio of the Associations between maternal characteristics with Fertility in Butajira, 2009

Age at first Marriage

   20 and over

1.00

1.00

   15-19

1.33 (1.27, 1.39)

1.11 (1.01, 1.20)*

   Less than 15

1.83(1.75, 1.91)

1.38 (1.27, 1.49)*

Educational status

   Secondary plus

1.00

1.00

   Primary

1.34 (1.24, 1.44)*

1.14 (1.02, 1.27)*

   Never

1.83 (1.70, 1.97)*

1.24 (1.10, 1.39)*

Ecology

   Urban

1.00

1.00

   Rural Lowland

1.29 (1.25, 1.33)*

0.88 (0.79, 0.98)*

   Rural highland

1.33 (1.29, 1.38)*

0.92 (0.83, 1.03)

Household size

Small (less or equal to 4)

1.00

1.00

Large (greater than 4)

2.08 (2.03, 2.15)*

1.95 (1.84, 2.06)*

Household livelihood

   Farming

1.00

1.00

   Trade/Service

0.79 (0.77, 0.82)*

0.86 (0.78, 0.96)*

   Civil service

0.66 (0.62, 0.71)*

0.96 (0.83, 1.11)

   Other

0.67 (0.64, 0.71)*

0.90 (0.80, 1.01)

Food shortage

   No

1.00

1.00

   Yes

1.16 (1.14, 1.19)*

1.06 (1.01, 1.13)*

Migration status

   In migrant

1.00

1.00

   None-migrant

1.04 (1.02, 1.08)*

1.02 (0.97, 1.07)

Have a dead child

   No

1.00

1.00

   Yes

1.90 (1.86, 1.95)*

1.67 (1.59, 1.76)*

Know correct pregnancy time

   Yes

1.00

1.00

   No

1.35 (1,28, 1.41)*

1.09 (1.03, 1.15)*

Have sex preference

   Yes

1.00

1.00

   No

1.14 (1.11, 1.17)*

1.09 (1.04, 1.15)*