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Table 3 Generalized estimating equations predicting baseline-endline difference of the differences in knowledge, attitude and practice of iodine deficiency disorder and iodized salt among women in Southwest Ethiopia, 2016–2017

From: Effect of nutrition education on iodine deficiency disorders and iodized salt intake in south west Ethiopian women: a cluster randomized controlled trial

Predictors Knowledge Attitude Practice
β (SE) 95% CI β (SE) 95% CI β (SE) 95% CI
Lower Upper   Lower Upper   Lower Upper
Nutrition education 8.809** (0.178) 8.459 9.158 3.352** (0.094) 3.168 3.535 2.895** (0.081) 2.737 3.054
Age in year − 0.010 (0.015) − 0.038 0.019 − 0.004 (0.013) − 0.029 0.021 0.005 (0.008) − 0.010 0.020
Family size − 0.250 (0.225) − 0.692 0.191 0.544* (0.220) 0.113 0.975 0.161 (0.114) − 0.062 0.384
Educational status 0.233 (0.212) − 0.182 0.647 0.579* (0.203) 0.180 0.977 − 0.095 (0.103) − 0.297 0.106
Geographic location − 0.395 (0.209) − 0.804 0.014 0.154 (0.196) − 0.230 0.538 − 0.315* (0.100) 0.511 − 0.119
Wealth index          
 Medium − 0.190 (0.283) − 0.744 0.364 0.240 (0.265) − 0.278 0.759 − 0.278 (0.150) − 0.572 0.017
 Poor − 0.511* (0.230) − 0.962 0.059 0.700* (0.229) 0.252 1.148 − 0.093 (0.106) − 0.300 0.114
Iodized salt+ − 0.284 (0.210) − 0.696 0.128 − 0.164 (0.202) − 0.560 0.231 − 0.612** (0.099) 0.807 0.417
  1. Italics indicate different levels of significance
  2. Reference categories: Nutrition education (control), age (continuous variable), family size (≤5), educational status (formal), geographic location (lowland), wealth index (rich), iodized salt (available)
  3. **Significant at P < 0.0001
  4. *Significant at P < 0.05
  5. +Iodized salt, not available in nearby shop/market