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Published on: May 31, 2016
Calcium deficiency and causation of rickets in Ethiopian children
T Belachew1, H Nida, T Getaneh
1Jimma University Specialised Hospital, P. O. Box 1104, Jimma, Ethiopia.
Insights
Low calcium intake is common in Ethiopian children, but vitamin D deficiency from inadequate sun exposure is the primary cause of rickets. Rural children face a higher risk due to limited sunlight exposure.
Area of Science:
- Pediatrics
- Nutritional Science
- Public Health
Background:
- Rickets is a significant health concern in Ethiopian children.
- Dietary calcium intake is often below recommended levels in this population.
Purpose of the Study:
- To investigate the role of calcium in the development of clinical rickets among Ethiopian children.
- To identify risk factors associated with rickets in young children.
Main Methods:
- A case-control study was conducted involving 135 children under five years old at Jimma Specialized Hospital.
- Data on calcium intake, sun exposure, and socio-demographic factors were collected and analyzed using logistic regression.
Main Results:
- No statistically significant difference in mean calcium intake was found between children with rickets and controls.
- Inadequate calcium intake was prevalent in both groups, below the recommended daily allowance.
- Increased frequency of sunlight exposure (OR = 1.55), rural residence (OR = 5.0), and age 12-23 months (OR = 4.5) were significantly associated with rickets.
Conclusions:
- Vitamin D deficiency due to poor sun exposure, not low dietary calcium, is the main cause of rickets in Ethiopian children.
- Rural children are at higher risk, potentially due to traditional practices.
- Public health initiatives promoting sun exposure are crucial for rickets prevention.
Objective:
To assess the role of calcium in the development of clinical rickets among Ethiopian children coming to Jimma Specialised Hospital outpatient, department.
Design:
Case control study.
Settings:
Jimma Specialised Teaching Hospital and surrounding urban and rural community in the catchment area.
Subjects:
One hundred and thirty five under five year old children (30 cases of rickets and 104 non-rachitic cases) who came for paediatric service in Jimma hospital.
Results:
The mean (+/- SD) level of calcium intake for cases and controls was 664.5 (+/- 102.7) mg and 645.8(+/- 144.4) mg, respectively. There was no statistically significance difference between the two groups in the mean level of calcium intake (t = 0.659, P > 0.05). Generally, in both cases and controls the majority of the study participants were taking calcium below the recommended daily calcium requirement of 800 mg for age group according to Food and Nutrition Board of the National Research Council. When adjusted for different co-variates including age, sex, breast feeding history, history of diarrhoea lasting longer than 14 days and 24 hours calcium intake children and religion, occupation, educational status and residence the mothers/care givers using logistic regression model, frequency of exposure to sunlight ( OR = 1.55, 95%CI: 1.2, 2.0), being from rural areas (OR = 5.0, 95% CI: 1.1, 23.3) and age 12-23 months (OR= 4.5, 95% CI: 1.2, 16.5) were significantly associated with rickets (P < 0.05).
Conclusion:
It was found that Ethiopian children with rickets and without had a low calcium intake as compared to the recommended daily allowance. The fact that there was no difference in the dietary calcium intake between cases and controls and the significant difference observed between case and controls in terms of frequency of exposure to sunlight per week reflects that vitamin D deficiency emanating from poor exposure to radiant energy is the main cause of rickets in Ethiopian children. This study also documented the fact that rural children are at a higher risk of developing rickets as compared to their urban counterparts which could be mainly due to the traditional beliefs and practices more prevalent in the rural areas. Enhancing behaviour change communication about the benefits of exposing children to sunlight is very important in preventing the prevalence of rickets.
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