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Table 3 Factors associated with Low Birth Weight (N = 6386)

From: A comparative analysis of determinants of low birth weight and stunting among under five children of adolescent and non-adolescent mothers using 2015/16 Tanzania Demographic and Health Survey (TDHS)

  N n (%) OR (95% CI) aAOR (95%CI)
Maternal age (Years)
 Adolescents (15–19) 459 66 (14.3) 1 1
 Adults (20 +) 5927 376 (6.3) 0.41 (0.29–0.57) 0.34 (0.22–0.50)
Level of education
 No education 866 65 (14.8) 1  
 Primary education 4220 294 (66.5) 0.91 (0.63–1.32)  
 Secondary or higher education 1300 83 (18.7) 0.83 (0.55–1.26)  
Wealth quintile
 Low SES 3292 226 (51.1) 1  
 High SES 3094 216 (48.9) 1.02 (0.78–1.33)  
Marital status
 Never married 458 44 (9.8) 1.62 (1.05–2.49) 1.23 (0.75–2.04)
 Married or living together 5129 316 (71.6) 1 1
 Divorced/ Separated/ Widowed 799 81 (18.4) 1.72 (1.23–2.42) 1.76 (1.24–2.50)
Place of residence
 Urban 2402 179 (40.4) 1  
 Rural 3984 263 (59.6) 0.88 (0.67–1.16)  
Maternal BMI
 Undernutrition 352 42 (9.6) 1.84 (1.23–2.75) 2.29 (1.43–3.67)
 Normal 4009 279(63.2) 1 1
 Overweight or obese 1989 120 (27.2) 0.86 (0.64–1.14) 0.99 (0.71–1.38)
At least 4 ANC visits
 No 2037 155 (53.0) 1 1
 Yes 2718 138 (47.0) 0.65 (0.50–0.83) 0.64 (0.49–0.83)
Child Sex
 Male 3266 197 (44.5) 1 1
 Female 3120 245 (55.5) 1.33 (1.07–1.68) 1.31 (0.98–1.75)
  1. N Total number of respondents, n Number of respondents with low-birth-weight babies, % row percent, AOR Adjusted odds ratio, OR Odds ratio, CI 95% Confidence interval, SES Socioeconomic status, BMI Body mass index, ANC Antenatal care
  2. a Adjusted for maternal age, marital status, maternal BMI, ANC attendance and child sex, 36 Non-adolescent women had missing height or weight measurement