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Table 4 Bivariable and multivariable Cox regression analysis for determinants of first birth among ever married female youths in Ethiopia, 2016

From: Time to first birth and its determinants among married female youths in Ethiopia, 2020: survival analysis based on EDHS 2016

Variable Categories Outcome CHR (95%CI) AHR (95% CI)
Censored Event
Residence Urban 195 178 1  
  Rural 593 1631 2.46 (2.01, 3.02) 1.49 (1.13, 1.97)*
Religion Orthodox 436 628 1  
  Muslim 237 733 1.71 (1.44, 2.03) 1.57 (1.22, 2.02)**
  Protestant 106 379 1.50 (1.21, 1.84) 1.73 (1.34, 2.24)**
  Othersa 9 69 1.91 (1.55, 2.37) 1.35 (.94, 1.92)
Education level No education 159 714 4.54 (3.38, 6.11) 1.55 (.99, 2.41)
  Primary 428 886 3.02 (2.27, 4.01) 1.26 (.85, 1.87)
  Secondary 144 160 1.58 (1.15, 2.17) 1.03 (.67, 1.57)
  Higher 58 48.72 1  
Wealth index Poor 285 872 1.75 (1.50, 2.03) .89 (.76, 1.07)
  Middle 150 371 1.51 (1.27, 1.80) .81 (.65, 1.00)
  Rich 353 566 1  
Current working status No 523 1404 1.46 (1.25, 1.70) 1.17 (.96, 1.42)
  Yes 265 405 1  
Husband education No education 146 578 3.08 (2.35, 4.04) 1.31 (.89, 1.92)
  Primary 254 770 2.44 (1.87, 3.181) 1.22 (.85, 1.75)
  Secondary 128 225 1.53 (1.08, 2.16) 1.14 (.79, 1.66)
  Higher 84 85 1  
Age at first sex < 15 109 416 5.04 (4.00, 6.34) 1.68 (1.23, 2.29)**
  15–17 345 912 2.78 (2.44, 3.17) 1.54 (1.29, 1.85)**
  ≥ 18 335 481 1  
Age at first marriage < 15 91 480 8.09 (6.46, 10.16) 6.52 (4.91, 8.64)**
  15–17 316 840 3.28 (2.87, 3.75) 2.63 (2.20, 3.141)**
  ≥ 18 381 489 1  
Demand for contraceptives Met need 260 655 1  
  Unmet need 98 332 1.31 (1.07, 1.60) 1.23 (1.00, 1.52) *
  No demand 430 822 .96 (.82,1.12) .74 (.54,1.17)
Decision on marriage My self 387 780 1  
  Parents 373 945 1.33 (1.15, 1.54) 1.040 (.87, 1.24)
  Other relatives 28 75 1.13 (.81, 1.59) .79 (.54, 1.17)
Alcohol drinking Yes 337 514 1  
  No 451 1295 1.41 (1.22, 1.63) 1.23 (.98, 1.55)
Media exposure Exposed 266 440 1  
  Non-exposed 522 1369 1.53 (1.32, 1.77) .88 (.71, 1.08)
Hearing FP messages on medias Yes 266 409 1  
  No 522 1400 1.62 (1.35, 1.95) 1.19 (.95, 1.49)
  1. Bold indicate the signifacant explanatory variabales with thier adjusted hazard ratio and confidence interval
  2. Other a = traditional and catholic
  3. FP family planning
  4. *Significant at p < 0.05 and
  5. **Significant at p < 0.001
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