Table 1 Respondents’ characteristics, 2003–2014

Age groups

 15–19

225 (5.7)

183 (4.6)

250 (3.4)

-1.1

-1.2

-2.3

 20–29

1627 (41.5)

1729 (43.2)

3085 (42.1)

1.7

-1.1

0.6

 30–39

1266 (32.3)

1325 (33.1)

2576 (35.1)

0.8

2.0

2.8

 40–49

799 (20.4)

765 (19.1)

1421 (19.4)

-1.3

0.3

-1.0

Education levels

 None

523 (13.4)

404 (10.1)

634 (8.6)

-3.3

-1.5

-4.8

 Primary

2328 (59.4)

2341 (58.5)

3966 (54.1)

-0.9

-4.4

-5.3

 Secondary

830 (21.2)

975 (24.4)

2003 (27.3)

3.0

2.9

6.1

 Higher

235 (6.0)

282 (7.1)

729 (9.9)

1.1

2.8

3.9

Place of residence

 Rural

3053 (77.9)

3054 (76.3)

4430 (60.4)

-1.6

-15.9

-17.5

Religion

 Roman catholic

968 (24.8)

845 (21.1)

1402 (19.1)

-3.7

-2.0

-5.7

 Protestants/other Christian

2581 (66.0)

2752 (68.8)

5288 (72.1)

2.8

3.3

6.1

 Muslim

288 (7.4)

269 (6.7)

471 (6.4)

-0.7

-0.3

-1.0

 No religion/other religions

79 (2.0)

136 (3.4)

171 (2.3)

1.4

-1.1

0.3

Region

 Nairobi

344 (8.8)

307 (7.7)

760 (10.4)

-1.1

2.7

1.9

 Central

558 (14.2)

427 (10.7)

930 (12.7)

-3.5

2.0

-1.5

 Coast

263 (6.7)

359 (9.0)

703 (9.6)

2.3

0.6

2.9

 Eastern

691 (17.6)

709 (17.7)

1181 (16.1)

0.1

-1.6

-1.5

 Nyanza

582 (14.9)

634 (15.9)

1083 (25.3)

1.0

9.4

10.4

 Rift valley

868 (22.2)

1040 (26.0)

1858 (25.3)

3.8

-0.7

3.1

 Western

503 (12.9)

471 (11.8)

644 (8.8)

-1.1

-3.0

-4.1

 North Eastern

108 (2.8)

55 (1.4)

173 (2.4)

-1.4

1.0

-0.4

Wealth Index

 Lowest

728 (18.6)

676 (16.9)

1224 (16.7)

-1.7

-0.2

-1.9

 Second

772 (19.7)

737 (18.4)

1286 (17.5)

-1.3

-0.9

-2.2

 Middle

712 (18.2)

780 (19.5)

1388 (18.9)

1.3

-0.6

0.7

 Fourth

796 (20.3)

827 (20.7)

1581 (21.6)

0.4

0.9

1.3

 Highest

908 (23.2)

982 (24.5)

1852 (25.3)

1.3

0.8

2.1

Age at first sexual intercourse

 Below 15

750 (19.1)

574 (14.3)

1198 (16.3)

-4.8

2.0

-2.8

 15–19

2497 (63.7)

2645 (66.1)

4638 (63.3)

2.4

-2.8

-0.4

 20+

670 (17.1)

784 (19.6)

1496 (20.4)

2.5

0.8

3.3

Age at first marriage

 Below 18

1447 (37.0)

1355 (33.9)

2356 (32.1)

-3.1

-1.8

-4.9

 18–24

2175 (55.5)

2313 (57.8)

4267 (58.2)

2.3

0.4

2.7

 25+

294 (7.5)

330 (8.3)

709 (9.7)

0.8

1.4

2.2

Family size preferences

 0–2

724 (18.5)

859 (21.5)

1676 (22.9)

3.0

1.0

4.4

 3–4

2075 (53.0)

2135 (53.4)

4020 (54.8)

0.4

1.4

1.8

 5+

1118 (28.5)

1007 (25.2)

1636 (22.3)

-3.3

-2.9

-6.2

Child mortality experience

 One or more child deaths

1018 (26.0)

850 (21.2)

1275 (17.4)

-4.8

-3.8

-8.6

current use of contraceptive

 Yes

2605 (66.5)

2989 (74.7)

5864 (80.0)

8.2

5.3

13.5