Table 2 Characteristics of 115,374 births included in the study sample

Retention in SBA among ANC clients

0.66

0.0017

 Blood pressure checked at least once during ANC

0.87

0.0012

 Any urine test conducted during ANC

0.70

0.0016

 Any blood test conducted during ANC

0.79

0.0015

 Told about pregnancy complications during ANC

0.61

0.0018

 Attended up to 4 ANC visits

0.63

0.0018

 Received at least one tetanus injection during ANC

0.84

0.0013

 Received ANC in health facility

0.86

0.0013

 Has health insurance

0.07

0.0010

 Lives in an urban area

0.39

0.0018

 Belongs to the richest two wealth quintiles

0.44

0.0018

 Partner has any primary education or higher

0.67

0.0017

 Any primary education or higher

0.63

0.0017

 Aged between 18 and 35 years

0.81

0.0014

 Primiparous (first birth)

0.18

0.0014

 Grand multiparous (more than 5 previous births)

0.22

0.0015

 Benin

0.06

0.0008

 Burkina Faso

0.03

0.0006

 Burundi

0.04

0.0007

 Cameroon

0.02

0.0005

 Chad

0.01

0.0005

 Comoros

0.02

0.0005

 Congo

0.04

0.0009

 Democratic Republic of Congo (DRC)

0.06

0.0010

 Ethiopia

0.02

0.0007

 Gabon

0.02

0.0007

 Gambia

0.04

0.0007

 Ghana

0.03

0.0006

 Ivory Coast

0.04

0.0007

 Kenya

0.05

0.0009

 Lesotho

0.02

0.0005

 Liberia

0.03

0.0007

 Madagascar

0.03

0.0006

 Mali

0.03

0.0005

 Mozambique

0.04

0.0006

 Namibia

0.02

0.0004

 Niger

0.06

0.0008

 Nigeria

0.10

0.0010

 Sierra Leone

0.05

0.0007

 Swaziland

0.01

0.0003

 Tanzania

0.04

0.0007

 Togo

0.02

0.0005

 Zambia

0.07

0.0009

 Zimbabwe

0.01

0.0003