Table 3.

Adjusted risk ratio of facility-based delivery according to percentage of women who had >1–4 ANC visits in three models, urban and rural area (TDHS, 1991–2010)

Percentage of women in the area	Urban			Rural
	Model 1	Model 2	Model 3	Model 1	Model 2	Model 3
ANC ≥ 1	1.12	1.10	1.12	0.93	0.93	0.93
ANC ≥ 2	1.14***	1.13***	1.14***	0.92	0.92	0.92
ANC ≥ 3	1.22***	1.11***	1.11***	0.94	0.92	0.92
ANC ≥ 4	1.05	1.05*	1.05*	0.93	0.94	0.94

* P < 0.05, **P < 0.01, ***P < 0.001.

ANC, antenatal care.

Model 1 indicates the random coefficient model without exploring the error (random coefficient model); Model 2 explores the correlation structures within the district and Model 3 contains the covariance between and within the district. Risk ratio means that increment of facility delivery rate with increment of percentage of >1–4 ANC by 10%. All risk ratios were adjusted for covariates (time points, mean maternal age, mean number of total live birth, secondary education of women and partner, proportion of media exposure and nulliparous women).