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Table 3 Factors associated with perinatal mortality: crude (unadjusted) and adjusted odds ratio estimates of logistic regression analysis

From: Statistical analysis of socioeconomic and demographic correlates of perinatal mortality in Tigray region, Ethiopia: a cross sectional study

Covariates Crude (unadjusted) Adjusted
OR 95% C.I p-value AOR 95% C.I p-value
Birth type
 Multiple birth 1.00     1.00    
 Single birth 0.190 0.113 0.319 < 0.0001* 0.179 0.100 .321 < 0.0001*
Sex of child
 Female 1.00     1.00    
 Male 0.586 0.425 0.808 0.001* 1.740 1.234 2.454 0.002*
Birth interval
 39 and more months 1.00     1.00    
 15 and less month 7.480 4.497 12.442 < 0.0001* 7.902 4.526 13.795 < 0.0001*
 16–26 months 2.264 1.452 3.530 < 0.0001* 2.088 1.292 3.375 0.003*
 27–38 months 1.431 0.922 2.221 0.110 1.509 0.951 2.396 0.081
Birth order
 6 and more 1.00     1.00    
 3 and less 1.071 0.698 1.481 0.930 1.231 0.767 1.975 .389
 4–5 0.721 0.464 1.121 0.146 0.977 0.600 1.592 .927
Maternal age
 45–49 years 1.00     1.00    
 29 & less year 0.618 0.373 1.024 0.062 0.293 0.128 0.668 0.003*
 30–34 years 0.392 0.232 0.662 < 0.0001* 0.335 0.173 0.646 0.001*
 35–39 years 0.466 0.301 0.721 0.001* 0.381 0.231 0.628 < 0.0001*
 40–44 years 0.540 0.346 0.842 0.007* 0.585 0.360 0.948 0.029*
Residence
 Rural 1.00     1.00    
 Urban 0.527 0.283 0.982 0.044* 0.364 0.136 0.970 0.043*
Mother Education
 Secondary and Higher 1.00     1.00    
 No education 0.803 0.382 1.687 0.562 0.496 0.170 1.447 0.199
 Primary education 0.928 0.420 2.048 0.853 0.861 0.302 2.457 0.780
Source of water
 Unprotected 1.00     1.00    
 Piped source 0.588 0.383 0.905 0.016* 0.675 0.382 1.193 0.176
 Protected well 0.714 0.504 1.010 0.057 0.684 0.469 0.997 0.048*
Toilet facility
 With toilet 1.00     1.00    
 No toilet facility 0.540 0.387 0.753 < 0.0001* 1.649 1.093 2.488 0.017*
Sex of household head
 Female 1.00     1.00    
 Male 0.421 0.259 0.686 0.001* 0.378 0.213 0.670 0.001*
Wealth index
 Rich 1.00     1.00    
 Poor 2.324 1.471 3.672 < 0.0001* 1.948 1.011 3.754 0.046*
 Middle 1.704 1.074 2.702 0.024* 1.540 0.828 2.865 0.172
Parity
 9 and more children 1.00     1.00    
 3 & less 0.718 0.448 1.150 0.168 1.065 0.447 2.541 0.887
 4–5 0.319 0.196 0.520 < 0.0001* 0.418 0.211 0.828 0.012*
 6–8 0.383 0.262 0.560 < 0.0001* 0.401 0.257 0.626 < 0.0001*
Husband education
 Secondary/Higher 1.00     1.00    
 No education 0.962 0.529 1.750 0.900 0.517 0.219 1.220 0.132
 Primary education 0.778 0.416 1.454 0.432 0.533 0.230 1.235 0.142
HIV status
 Yes 1.00     1.00    
 No 0.767 0.488 1.205 0.250 1.435 0.842 2.446 0.184
Mother occupation
 Agriculture 1.00     1.00    
 Not working 0.875 0.600 1.274 0.485 1.053 0.693 1.599 0.809
Non-agriculture 1.673 1.150 2.434 0.007* 2.734 1.773 4.216 <.0001*
  1. *Significant at p < 0.05,
  2. Note: LRT = 406.618 (p < 0.001),
  3. Hosmer and Lemeshow Test = 7.577 (p = 0.476)