Transcript Assessment of Nutritional status
Dr. SK Roy MBBS, M.Sc. Nutr (London), Dip-in-Biotech(UNU), PhD(London), FRCP (Edin)
Nutritional status indicators whether the individual is well-nourished or undernourished To define the nutritional problem of the targeted population, nutritional status is measured
Nutritional Need Assessment of the Community
• Define needs, opportunities and constraints, and prioritize solutions
Evaluate of nutrition programmes
• Evaluate programme impact and improve efficiency .
Policy change and sustainability
• Influence decision making in strategic planning, policy formulation and resource allocation.
• Raise community awareness and participation to maximize long-term impact.
Assessment Analysis Nutritional status assessments measure
Anthropometric
Biochemical or physiological characteristics.
Action These assessments combined with the analysis of underlying causes will result in appropriate action.
Triple A Cycle (Source –UNICEF)
Incorporating nutritional objectives- into development policies and programmes
.
Household food security Protecting consumers through improved food quality and safety.
Preventing and managing infectious diseases Promoting breastfeeding Promoting appropriate diets and healthy lifestyles Assessing, analyzing and monitoring nutrition situations
Food & Agriculture
Food security Agricultural production Food Safety
Law enforcing agency Food Safety At consumer level Penalization Health And family planning Supplementation Prgrammes for Vulnerable groups EPI, IMCI. Nutritional Surveys (BDHS,NNP baseline ) Nutritional services Commerce and Finance Market Stabilization Control of Food price Import Export Balance
Different anthropometrical indices
Weight
Height
Mid upper arm circumferences Skin fold thickness
Demi-span or armspan
Knee height
Sitting height
Skin fold thickness
Head circumference
It is precise and accurate
It uses standardized technique
It is suitable for large sample sizes, such as representative population samples
Inexpensive equipment and skills can be learnt quickly.
Large population based surveys Bangladesh Demographic and Health survey 2007 National Nutrition Survey –Baseline Survey 2004
Clinic Based Done by Health Care professionals Example: Maternal and child health care Clinic
National surveys which are periodically conducted at national level (BDHS-2007, NNP 2004)
Small-scale surveys which are carried out at local level to gather nutrition information within the shortest time possible. MDGF Baseline Survey Conducted In Bhola And Borguna (WFP/UNICEF/ FAO)
Biochemical testing contribute to diagnosing micronutrient deficiencies
.
• • •
The most common deficiencies are:
Iron vitamin A
, and
Iodine During emergencies
:
scurvy Beri-Beri (vitamin B 1 deficiency
)
pellagra (vitamin B 3 deficiency).
Example : National Nutritional survey 2004
Haemoglobin level among adolescent girls
Table salt iodine level
Urinary iodine excretion
Prevalence of stool parasite
Information on food intake may help to better understand the causes of malnutrition and can also be used as a proxy for nutritional outcome.
Food intake or consumption surveys assess the types and amounts of food eaten intake per person.
.
This can be represented in terms of daily energy and nutrient
May involve weighing amounts of food eaten or using dietary recall.
Difficulties: labour-intensive time consuming and costly
.
Dietary recall are more dependent on memory. The analysis of food intake surveys requires high level of skills the use of specific software availability of a food composition table
.
Advantages
:
provide invaluable information on quantities, diet quality and on whether energy and nutrient intake are being met.
This type of assessment is undertaken in stable contexts where more information is needed about dietary causes of malnutrition.
Dietary diversity (DD) scores is a proxy of nutritional quality of the diet.
The DD scores consists of a simple count of the number of food groups consumed by an individual or a household over a given period of time.
The assumption is that the higher the score, the better the quality of the diet.
Assessing DD is useful to evaluate the impact of a wide range of programmes on dietary quality.
Examples are livelihoods and crop diversification, nutrition education, school and homestead gardens.
These assessments may be carried out in stable situations where there is a known problem of
lack of dietary diversity
and where efforts to improve agricultural diversification in order to improve diet have been ongoing for many years.
The DD assessment can also be used in
emergency contexts
diet. , where shock can adversely impact the quality of the
Carried out at food distribution sites
camp situations, e.g. among refugees
in order to ensure that food distribution systems are operating optimally
to help identify any risk of nutrition problems, especially micronutrient deficiency diseases.
Where camp populations are dependent on long-term food aid, FBM is critical, especially where the ration diversity is limited and where there is an absence of micronutrient rich foods in the ration, e.g. fortified Corn Soy Blend.
Computer programmes to calculate micronutrient content of food rations are available.