Table 2. Unadjusted infant mortality rates (per 1000 live births) by socioeconomic status and residence zone in Colombia, 2011–2020.

	Mortality rate	95% CI	P value
Educational level
University	6.87	6.67 to 7.06	0.00
Technical	7.77	7.56 to 7.99
Secondary	9.53	9.43 to 9.64
Primary or less	11.33	11.11 to 11.56
Health insurance enrolment scheme
Contributory/except/special	7.79	7.68 to 7.90	0.00
Subsidised	10.34	10.22 to 10.46
Uninsured	13.16	12.61 to 13.71
Residence zone
Urban municipal centre	9.10	9.01 to 9.19	0.00
Small populated centre	9.92	9.62 to 10.23
Dispersed rural area	9.96	9.73 to 10.19

Unadjusted mortality rates estimated using Poisson regressions.

CI, Confidence Interval.