Skip to main content

Table 2 Associations between pregnant women’s alcohol consumption and maternal anaemia in Northern Tanzania 2006–2010

From: Alcohol consumption among pregnant women in Northern Tanzania 2000–2010: a registry-based study

  % of pregnancies % of pregnancies associated with anaemia Univariate analysis Multivariable model(a)
Variables RR (95 % CI) p-value ARR (95 % CI) p-value
Anaemia during pregnancy (Hb < 11.0 g/dL) (n = 8778)(b)
 Drinks alcohol 26.7 46.5 0.81 (0.77 – 0.85) < 0.001 0.84 (0.79 – 0.90) < 0.001
 Drinks alcohol every day 0.4 43.6 0.76 (0.53 – 1.08) 0.126 0.82 (0.49 – 1.36) 0.439
 Drinks alcohol more than once a week 7.4 41.6 0.72 (0.66 – 0.79) < 0.001 0.77 (0.68 – 0.87) < 0.001
 Drinks alcohol once a week 2.9 44.0 0.77 (0.66 – 0.88) < 0.001 0.78 (0.64 – 0.95) 0.012
 Drinks occasionally 16.0 49.2 0.85 (0.81 – 0.90) < 0.001 0.88 (0.82 – 0.95) 0.002
 Abstains from alcohol 73.3 57.6 1.00   1.00  
Severe anaemia during pregnancy (Hb < 7.0 g/dL) (n = 8778)(b)
 Drinks alcohol 26.7 6.1 0.75 (0.63 – 0.90) 0.002 0.74 (0.58 – 0.95) 0.016
 Drinks alcohol every day 0.4 12.8 1.58 (0.69 – 3.60) 0.276 1.12 (0.44 – 2.86) 0.811
 Drinks alcohol more than once a week 7.4 6.0 0.74 (0.54 – 1.02) 0.062 0.51 (0.32 – 0.80) 0.003
 Drinks alcohol once a week 2.9 6.3 0.78 (0.48 – 1.27) 0.318 0.70 (0.34 – 1.41) 0.318
 Drinks occasionally 16.0 5.9 0.73 (0.58 – 0.91) 0.006 0.87 (0.66 – 1.16) 0.353
 Abstains from alcohol 73.3 8.1 1.00   1.00  
Mild/moderate anaemia during pregnancy (Hb 7.0 – 10.9 g/dL) (n = 8778)(b)
 Drinks alcohol 26.7 40.4 0.82 (0.77 – 0.86) < 0.001 0.86 (0.80 – 0.93) < 0.001
 Drinks alcohol every day 0.4 30.8 0.62 (0.39 – 1.00) 0.048 0.70 (0.35 – 1.39) 0.310
 Drinks alcohol more than once a week 7.4 35.6 0.72 (0.65 – 0.80) < 0.001 0.82 (0.72 – 0.94) 0.004
 Drinks alcohol once a week 2.9 37.7 0.76 (0.65 – 0.89) 0.001 0.79 (0.64 – 0.98) 0.034
 Drinks occasionally 16.0 43.3 0.88 (0.82 – 0.93) < 0.001 0.89 (0.81 – 0.97) 0.007
 Abstains from alcohol 73.3 49.5 1.00   1.00  
  1. (a)In the multivariable analyses the associations with alcohol have for all the outcomes been adjusted for the following predictors: mother's age, mother's occupation, mother's tribe, mother's religion, mother's body mass index, mother's height, previous pregnancies, mother's current residence, mother's childhood residence, father's age, father's tribe, year of delivery, drinking water source, boiling of drinking water, mother's age at marriage and mother's HIV-status
  2. (b)For anaemia during pregnancy, mild/moderate anaemia and severe anaemia one data entry per pregnancy has been included. Results from anaemia, mild/moderate anaemia and severe anaemia are based on 8778 pregnancies registered from 2006 and onwards