Nutritional and micronutrient (vitamin A, Iron, and Zinc) status of children aged 9-59 months: a comparative study of kitchen and non-kitchen gardening households in ngong division, Kajiado district, Kenya
Abstract
The study sought to assess the potential of kitchen gardening on improving the nutritional
and micronutrient status of the study population. The specific objective was to compare the
nutritional and micronutrient status of children aged 9-59 months in the households
practising kitchen gardening and those without kitchen gardens.
Both qualitative and quantitative data were collected from a sample of 221 households, of
which 80 had kitchen gardens. Qualitative data was collected using key informant
interviews, focus group discussions and observation. Quantitative data was collected using a
pre-tested structured questionnaire and biochemical analysis of blood. Information was
collected on demography, social-economic characteristics, mothers' nutrition knowledge,
production and utilization of foods produced in kitchen gardens, food consumption patterns
of the households and pre-school children, anthropometry, micronutrient status, morbidity
and sanitation. The data was analysed using statistical package for social sciences program
and EPI-info available at Applied Nutrition Program.
The study results indicated that the kitchen gardening and non-kitchen gardening households
were similar in demography and social-economic characteristics. Kales, spinach, 'enderema'
(Basela alba), black nightshade, amaranth, spider plant and tomatoes among others were
grown in the kitchen gardens. Vegetables produced in the kitchen gardens were consumed at
home. Kitchen gardening households more frequently consumed legumes (p=0.044), fruits
(p=0.042) and vegetables (p=0.005) than non-kitchen gardening households. There was
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more variety of vegetables (p=0.026) and roots and tubers (p=0.000) in the diets of kitchen
gardening households than non-kitchen gardening households.
The study children in kitchen gardening households consumed green leafy vegetables more
often (three times a week for those under three years and four times a week for those above
three years), (p=O.OOO)than those in non-kitchen gardening households (two times a week for
both the children under three years of age and above three years). The consumption of calorie
was inadequate in both kitchen gardening and non-kitchen gardening households. Study
children in kitchen gardening households had significantly higher mean intake of vitamin A
(p=0.000) and Zinc (p=0.00l) per day as compared to the children in non-kitchen gardening
households.
Multiple regression analysis showed that the diversity of vegetables, fruits, animal proteins,
and cereals consumed was positively associated with both social-economic status and kitchen
gardening. Kitchen gardening influenced the diversity of vegetables more (beta =0.261,
p=0.048) than the social-economic status (beta =0.113, p=0.05).
Nutritional status in the children aged 18-24 months, 48-54 months and 54-59 months was
better among those in kitchen gardening households compared to those in non-kitchen
gardening households. Fewer children were severely stunted (3.9%, n=80 as compared to
15%, n=133) and no child was severely wasted among kitchen gardening households.
Morbidity experience two weeks prior to the study among children in the kitchen gardening
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households (53.8%) was lower compared to those III non-kitchen gardening households
(69.9%).
Vitamin A and iron deficiency was lower in the children in kitchen gardening households
compared to those from non-kitchen gardening households (p=0.001 and 0.021
respectively). The mean serum retinol, serum ferritin and serum zinc level were also higher
for children in kitchen gardening households (p=0.000, 0.039 and 0.002 respectively).
Spearman's correlation showed a significant positive relation between kitchen gardening
and serum retinol (r=0.503, p=O.OOO),serum ferritin (r=0.346, p=0.010) and serum zinc
(r=0.449, p=O.OOl) levels. Serum retinol level was also positively correlated with the
vitamin A supplementation. Multiple regression analysis showed that serum retinol
(beta=0.381, p=0.003), Serum ferritin (b=0.341, p=0.010) and serum zinc, (b=0.116,
p=0.047) levels were positively associated with kitchen gardening.
From the study results it is evident that kitchen gardening leads to improved dietary diversity
and nutrient intake which in turn leads to decreased morbidity and improved nutritional and
micronutrient status of pre-school children.
The study therefore recommends that kitchen gardening be taught, demonstrated and
encouraged in urban and peri-urban communities.
Citation
Master of science degree in applied human nutritionPublisher
University of Nairobi Department of Food and Nutrition Technology