Table 1 Independent variables of the study and their levels

Demography

1

Year of DHS

2012, 2018

2

Age groups

15–18 years, 19–30 years, 31–40 years, 41–49 years

3

Administrative region

Conakry, Boké, Faranah, Kankan, Kindia, Labé, Mamou, N'Zérékoré

4

Level of education

No formal education, primary, secondary and university

5

Marital status

Single, married. Widow, divorced women and women in the separation were considered single

6

Parity

Primiparous (1 delivery), Multiparous (more than 1 deliveries)

7

Gender of head of household

Male, Female

8

Age of the head of household

16–25 years, 26–40 years, 41–60 years, 61–91 years

9

Relationships with the head of the household

We considered as a direct link any father/mother-daughter, Sister and husband-wife relationship. When the respondent was the head of the household, the link was direct. Otherwise, the link was indirect

10

Household size

The number of persons living in the household. It is divided into 2–4 people, 5–10 people, 11–38 people

11

Place of delivery

Domicile, private health structure, public health structure

12

Partner's level of education

No formal education, primary, secondary and university

13

Desire for pregnancy

Yes, no

Socio-economics

14

Wealth Index

Poor, middle and richer. The poorest and poorer were classified as poorer, the richer and richest as richer

15

Occupation

Yes, no

Information

16

Journal

Access, no access

17

Radio

Access, no access

18

Television

Access, no access

Health Care use

19

Antenatal care (ANC)

Less than 4 ACNs, 4 ACNs and More

20

Time of the first ANC

The first quarter, the second quarter, the third quarter