Skip to main content

Table 4 Data from the maternal questionnaires

From: Comparison of child morbidity in regions of Ostrava, Czech Republic, with different degrees of pollution: a retrospective cohort study

Variables O. south O. east O. center O. west P. (KW)
   % % % %  
Gender Boys 49.7 49.2 55.2 48.3  
Girls 50.3 50.8 44.8 51.7  
Delivery Sectio Caesarea 17.4 16.4 19.4 18.7  
Phototherapy* 5.5 1.6 7.2 4.4 = 0.028
Birth weight Mean (grams) 3380 3380 3380 3399  
SD (grams) 478 492 481 455  
Age of mothers at delivery <20 years 4.2 5.5 6.0 3.4  
20 to 30 years 64.7 68.9 67.0 67.8  
>30 years 31.0 25.7 27.0 28.8  
Mother’s education Low 9.1 16.4 10.1 5.1  
Middle 40.2 38.3 35.1 29.7  
High 50.7 45.4 54.9 65.2  
Breastfeeding Breast fed 92.8 86.3 93.7 92.9 = 0.009
Months – mean 8.7 7.6 8.8 11.0  
Months – SD 9.1 8.1 9.1 20.9  
Smoking of mothers During pregnancy 12.0 17.5 18.1 9.1  
During the study 31.5 32.2 35.6 23.6 = 0.019
Exposure to ETS* Any adult 48.6 54.6 49.9 42.7  
Type of flat Family house 11.0 55.0 3.0 15.5 < 0.001
(in the 1st year) Brick block flats 23.6 36.8 36.0 36.1  
Concrete block flats 65.5 8.2 61.0 48.5  
Type of heating Distant 65.5 8.2 61.0 48.5 < 0.001
Gas 16.0 48.3 15.4 13.1  
Coal/wood 2.8 30.2 2.1 2.8  
Mold in flat Yes 24.2 36.8 12.9 18.9 < 0.001
Gas appliances in flat Yes 86.6 66.3 90.8 89.8 < 0.001
Other children under 14 Yes 51.5 55.7 48.9 41.2  
Family history of allergies Mother 37.2 44.8 34.2 33.1  
Father 21.1 23.0 25.0 28.7  
Siblings 20.9 31.1 26.1 26.4 = 0.016
Pets Cat 6.4 9.8 5.2 4.7  
Dog 20.9 19.1 17.5 20.9  
Birds 7.2 8.2 6.0 7.8  
Other* 23.6 20.8 21.8 22.0  
Day care 3rd and 4th year 56.8 40.4 52.7 63.5 < 0.001
4th and 5th year 89.3 72.9 89.9 92.9 < 0.001
  1. Categorical covariates except birth weight and the length of breastfeeding. KW-Kruskal Wallis test.
  2. *Phototherapy - neonatal icterus treated with phototherapy, *ETS - environmental tobacco smoke.
  3. *Other - rabbits, guinea pigs, hamsters, degus etc.