Table 3 Adjusted odds ratios of the effect of region and economic status on antenatal care use at different time points, Ethiopia

Region*

 Amhara

1

-

1

-

1

-

 Tigray

2.5(2.0,3.2)

<0.0001

1.9(1.5,2.4)

<0.0001

2.5(2.0,3.1)

<0.0001

 Oromiya

1.4(1.1,1.7)

0.003

0.9(0.7,1.1)

0.252

0.8(0.7,0.9)

<0.0001

 SNNPR

1.4(1.1,1.7)

0.004

1.1(0.9,1.3)

0.553

0.9(0.8,1.0)

0.169

 Afar, Harari, Somali

1.1(0.9,1.4)

0.390

0.5(0.4, 0.7)

<0.0001

0.6(0.4,0.8)

0.001

 Ben-Gumuz, Gambela

1.7(1.3,2.1)

<0.0001

1.2(1.0,1.5)

0.096

1.1(0.7,1.6)

0.684

 Addis Ababa, Dire Dawa

2.6(2.0,3.3)

<0.0001

2.1(1.6,2.8)

<0.0001

3.1(1.9,5.1)

<0.0001

Economic status**

 Poorest

1

-

1

-

1

-

 Poorer

1.1(0.9,1.4)

0.305

1.5(1.1,1.9)

0.003

1.6(1.3,1.9)

<0.0001

 Middle

0.9(0.7,1.1)

0.315

2.1(1.6,2.7)

<0.0001

1.7(1.3,2.1)

<0.0001

 Richer

1.5(1.2,1.9)

0.001

2.5(1.9,3.2)

<0.0001

2.2(1.7,2.7)

<0.0001

 Richest

2.7(2.1,3.6)

<0.0001

4.4(3.3,6.0)

<0.0001

3.9(2.8,5.5)

<0.0001