Cluster sampling methodology to evaluate immunization coverage

Table 3 Association of variables with the immunization status of the study subjects

Characteristics	Partial & non immunized (n = 40)	Immunized (n = 260)	OR (95%CI)	P value
Gender
Male	24	137	1.35 (0.68-2.65)	0.388
Female	16	123	1 (ref)
Age (months)
12-17	20	88	1.96 (1.00-3.82)	0.048a
18-23	20	172	1 (ref)
Birth weight (kg)
< 2.5	14	85	1.11 (0.55-2.23)	0.773
≥ 2.5	26	175	1 (ref)
Mother’s education
Illiterate/up to 8th std	6	35	1.13 (0.44-2.90)	0.792
9th std. & above	34	225	1 (ref)
Mother’s profession
Employed (government/private job)	3	18	1.09 (0.31-3.88)	0.894
Others1	37	242	1 (ref)
Father’s education
Illiterate/up to 8th std	6	38	1.03 (0.41-2.70)	0.553
9th std & above	34	222	1 (ref)
Father’s occupation
Employed (government/private job)	16	114	0.85 (0.43-1.68)	0.648
Others1	24	146	1 (ref)
Socio-economic status
Lower/lower middle class	29	143	2.16 (1.03-4.50)	0.026a
Middle/upper middle/high class
Type of family
Joint/three generations	31	232	0.42 (0.18-096)	0.039a
Nuclear	9	28	1 (ref)
Birth order
> 2	9	39	1.64 (0.73-3.72)	0.228
≤ 2	31	221	1 (ref)
Availability of immunization card
No	13	5	3.40 (1.65-7.02)	< 0.001b
Yes	27	255	1 (ref)
Place of birth
Home/private hospital	8	97	0.42 (0.19-0.95)	0.022a
Government hospital	32	163	1 (ref)
BCG scar
No	15	39	3.40 (1.65-7.02)	0.001b
Yes	25	221	1 (ref)

^aP < 0.05.

^bP < 0.001.

¹Self-employed/housewife/farmer/laborer.

BCG: Bacillus Calmette Guerin; OR: Odds ratio; CI: Confidence interval.