Table 2:

Respondents’ socio-demographic characteristics (N = 3440)

Demographic characteristics	Control		Intervention
	No.	%	No.	%
Marital status
Married	1499	94.3	1479	95.5
Single	25	1.6	24	1.5
Othersa	66	4.2	46	5.7
Religion
Christianity	939	59.0	941	60.7
Islam	584	36.7	570	36.8
Traditional	7	0.4	0	0.0
No response	61	3.8	38	2.5
Highest education qualification
No formal education	118	7.4	94	6.1
Primary school not completed	130	8.2	74	4.8
Primary school completed	267	16.8	154	9.9
Arabic/Quranic	137	8.6	110	7.1
Secondary school not completed	136	8.6	212	13.7
Secondary school completed	488	30.7	604	39.0
NCE	156	9.8	146	9.5
Bachelor/HND	75	4.7	57	3.7
Postgraduate	9	0.6	15	1.0
No response	74	4.7	83	5.4
Main occupation
Trading	637	40.1	530	34.2
Artisan	133	8.4	113	7.3
Civil/public servant	120	7.6	111	7.1
Maid	1	0.1	0	0.0
House wife	156	9.8	401	25.9
Farmer	144	9.1	141	9.1
Professionalb	4	0.2	7	0.5
Student	11	0.7	34	2.2
Self-employed	5	0.3	2	0.1
Unemployed	368	23.7	189	12.2
Ethnic group
Yoruba	187	11.8	216	13.9
Igbo	321	20.2	300	19.4
Hausa	494	31.1	477	30.8
Others	585	36.7	556	35.9
Age (as at the last birthday)
<20 years	63	4.4	67	4.5
20 − 29 years	831	58.6	928	62.5
30 − 39 years	482	34.0	456	30.7
>40 years	42	2.9	34	2.3
Mean (SD)	27.98 ± 5.2		27.52 ±5.3
Birth experience
First child	321	21.0	374	25.1
Multiple births	1204	79.0	1118	74.9
Source of information on immunizationc
Health worker/health facility	881	55.4	1045	67.5
Public announcement/town crier	427	29.1	289	18.7
Church or mosque	188	11.8	61	3.9
Media	795	50.0	1310	84.6
Friend or neighbour or spouse	96	6.0	130	8.4
School	4	0.3	3	0.2
Self	5	0.3	12	0.8
Others	2379	149.9	2016	130.2
Average monthly income from all sources
<1000	117	16.5	77	11.5
1000–9999	338	47.6	229	34.2
10 000–19 999	146	20.6	223	33.3
20 000–29 999	55	7.7	67	10.0
30 000–39 999	28	3.9	29	4.3
40 000–49 999	9	1.3	12	1.8
>50 000	17	2.4	20	3.0
Mean	9372.07		12 048.19

^aOthers include the divorced, widowed, co-habiting and the non-response.

^bProfessional include lawyer, pharmacist, nurse and health worker.

^cMultiple responses.