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Prevalence of Childhood Developmental Delay in Child under 5 Years Old Living in Ulaanbaatar

Article Information

Narantuya B, Chimedsuren O* and Lkhagvasuren TS

School of Public Health, Mongolian National University of Medical Science, Ulaanbaatar, Mongolia

*Corresponding Author: Chimedsuren O, School of Public Health, Mongolian National University of Medical Science, Ulaanbaatar, Mongolia, Tel: +97611328924; E-mail: chimedsuren@mnums.edu.mn

Received: 21 August 2017; Accepted: 31 August 2017; Published: 04 September 2017

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Abstract

The Background: Children’s development and childhood disability are a public health priority due to their consequences affecting quality of life and productivity not only of the affected children but also of the families and populations as a whole. WHO and the World Bank estimate that more than a billion people live with some form of disability, which equates to approximately 15% of the world’s population. Citing the Global Burden of Disease study of 2004, the World Report further estimates that amongst those aged 0–14 years, roughly 5.1% of all children (93 million) live with a ‘moderate or severe’ disability and 0.7%, or 13 million children live with severe difficulties. Many children younger than 5 years in developing countries are exposed to multiple risks, including poverty, malnutrition, poor health, and other risks, which affect their cognitive, motor, and social emotional development. There are a few researches and national statistics on the childhood delay and disabilities of under 5 years children in Mongolia.

Objective: The main objective of the study was to screen childhood developmental delay under 5 years children in Ulaanbaatar, Mongolia.

Methods: Ten questions screening method was used in order to detect developmental delay in children of chosen age in Ulaanbaatar, Mongolia.

Results: A total of 1971 (25.8 percent) of the 7908 children surveyed had positive screening results on the Ten Questions instrument and 5937 of those children screening negatively. By age group 9 months 16.7 percent, 18-month-old 16.03%, 2 years old (17.4%) 3 years old 1255 (15.87%), 4 years old 1303 (16.47%) and 5 years old, 17.5 percent revealed positive results. By types of delays there were 8% motor delay, 8.2% hearing, 4.2% vision, 7.7% cognitive delay and 10.5% speech and language. The developmental del

Keywords

Developmental delay, Ten questions screening

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Article Details

Untitled Document

1. Introduction

This research has taken place in the Ulaanbaatar city, the capital of Mongolia where most of the population resides and has comprehended children under 5 years of age. Children were divided into 6 groups of age and total of 7908 children were involved. The research was conducted using the Ten Questions Screening, a recommended method by WHO and UNICEF and co-operating with a specialist team. The results showed that 25.8% of the total children were found to have developmental delay.

2. Material and Methods

2.1.???Children
Ten questions screening method was used in order to detect developmental delay in children of chosen age in Ulaanbaatar, Mongolia. Children were divided into 6 groups of age ? 9 months, 18 months, 2 years old, 3 years old, 4 years old, 5 years old. Face to face interview with the parent or care giver was held using questions containing the Ten questions screening method. Information was gathered from the Notebook of Mother and Child’s Health, when necessary. Sex of the children involved was set to 1:1 ratio. The child’s current height and weight was measured and examination, interview took around 10-15 minutes [1-3]. 80% of the care givers of 7908 children were their mothers.

2.2.???Statistical analysis
The data was entered, cleaned and stat analysis twice using the Epidata program, afterwards the Stata program provided the results in statistics. Potential cases of developmental delay in children, certain factors of the population, such as the child’s age group, sex, citizenship were taken into account. The results were expressed in percentage [4]. In order to differentiate the potential cases of developmental delay in children quantitatively, define the spread as normal and abnormal. When the spread is normal, the student’s t test (parameter method) is carried out. When the spread was abnormal, or hard to diagnose, the non-parameter method was conducted. On the other hand, in order to detect it qualitatively, the Fisher method and the xi square method was used. Statistical materiality was found material when below 0.05 [5, 6].

3. Results

In this research 7908 children aged from 9 months to 5 years old participated. Precisely, 1323 children of 9 months old, 1268 of 18 months old, 1375 of 2 years old, 1255 of 3 years old, 1303 of 4 years old and lastly, 1384 of 5 years old children. Among them, 4025 boys, which equals to 50.9% of the total population; 3883 girls taking up the rest 49.1%. To break this number in means of age groups: 16.7% of 9 months old newborns, 16.3% of 18 months old babies, 17.4% of 2 years old children, 15.87% of 3 years old, 16.47% of 4 years old, 17.5% of 5 years old children were diagnosed to have developmental delay. Of the total 7908 children involved, 1971 (25.8%) children were discovered to have developmental delay according to the Ten questions screening method (Table 1). In means of skills on average of all age groups: motor skills risk 8%, hearing skills risk 8.2%, vision skills risk 4.2%, cognitive skills risk 7.7% and lastly, linguistic skills risk 10.5% (Table 2). From the 7908 children, total 8% of them were found to have potential developmental delay in motor skills, which is likely to decrease as children grow older. Among the children of 9 months, 18 months and 5 years old motor skills developmental delay acquired 12.9%, 11.1%, 7.2% respectively, which is statistically material as they were significantly higher than in children of other age groups. From the 7908 children, 8.2% were detected to have hearing developmental delays and were random throughout the age groups. Among the children of 18 months, 4 years and 5 years old, the hearing developmental delay was 11.7%, 9.6%, 8.7%, whereas children of 9 months, 2 years old, 3 years old were 8.4%, 6.8%, 3.8% respectively. From the total 7908 children, 4.2% were detected to have vision developmental delay. The proportion was higher in the younger age groups and seemed to be increasing in children from 9 months old to 2 years old children. Among children from 3-5 years old, the percentage was 2.8, 3.0, 3.1 respectively. From the 7908 children, 7.7% were discovered to have potential developmental delay in cognitive skills. 3 years old children had the least percentage of 2.7%, whereas the children of 5 years old had the highest risk of 14.0%. Among the 7908 children, 10.4% were found to have potential developmental delay in their speech skills and it was random throughout the age groups. From 9 months to 2 years old age groups, the risk was likely to decrease with the percentages being 14.4%, 11.9%, 8.6% respectively. However, the children of 3 years old had the highest risk of 10.5%.

Age group

Number of cases (%)

9 months

329 (16.7)

18 months

321 (16.3)

2 years

343 (17.4)

3 years

308 (15.87)

4 years

325 (16.47)

5 years

345 (17.5)

Total

1971 (25.8)

Table 1: Screening results in Ulaanbaatar capital city of Mongolia.

Types of disabilities

Number of cases (%)

Motor

633 (8)

Hearing

648 (8.2)

Vision

332 (4.2)

Cognitive

609 (7.7)

Speech

830 (10.5)

Total

1971 (25.8)

Table 2: Types of developmental delays among the selected children in Ulaanbaatar capital city of Mongolia.

4. Discussion

Initially, 8730 children were inspected in order to detect developmental delays in children of Ulaanbaatar using the Ten Questions Screening method. However, only 7908 of them met the criteria for the research. Thornburn M J, Durkin M S, Belmont L and their team have invented the Ten questions Screening method in 1992 [7]. The ten questions screening is a simple method based on a population, by taking information on the child from their care giver. This method is relatively cost effective, as it does not require special machines, doctors and researchers and is commonly used in developing countries. In this research 7908 children aged from 9 months to 5 years old participated. Precisely, 1323 children of 9 months old, 1268 of 18 months old, 1375 of 2 years old, 1255 of 3 years old, 1303 of 4 years old and lastly, 1384 of 5 years old children were examined under the Ten Questions Screening method. The UNICEF has conducted a research to detect developmental delay in children from 50 countries aged from 2-9 years old. 4204 Mongolian children were involved. This research has also used the Ten questions screening method and 15.6% of those children were found to be developmentally delayed. Whereas in children from Laos, it was 7.9%, from Thailand 10.4%, from Bangladesh 17.1%. As you can see, in children from Bangladesh and Mongolia, the developmentally delayed children were almost 1.5 times as much as in the other countries. Our research in 2017 showed that from 7908 children, 25.8% were developmentally delayed, which is 10% than the number from the above figure [8-11]. This could be explained in two ways: parents were very much sensitive to the questions, answering every question to be positive, or the doctors examining and diagnosing the children. Between the 6 age groups, children of 9-18 months old had the highest risk of 31.7-33.2%, whereas 3 years old children’s risk was at 17.2%. Sexually, we noticed a statistical materiality. Researchers Howaida A, Nowno have conducted a study among 450 children living in country-side of Saudi Arabia Riyal during 2010-2011. The results showed that 33.1% of total developmental delay were linguistic skills, 20.4% were in cognitive, vision 13.1%, hearing 27.3%. Our research has resulted in the following: motor skills risk 8.0%, hearing skills risk 8.2%, vision skills risk 4.2%, cognitive skills risk 7.7%, linguistic skills risk 10.5%. These results are relatively low compared to the figures above. Diagnosing the spread in children, particularly infants can be complicated. The reason is researches and doctors have not come up with a united definition of developmental delay in children. Also, because the cognitive and motor skills of children develop very fast, detecting, screening and researching of children’s developmental delay always comes with burdens. Besides this, the definition of children’s developmental delay differentiates according to the medical development in the countries as well as the people and environment [12, 13].

5. Limitations

As any other research based on cross sectional studies screening test, discovering the relation of the factors resulting in developmental delay was impossible with this research. Our results, indicate that among children of all age groups, cognitive, linguistic and hearing skills were exposed to higher risk of being delayed. Detecting a child’s developmental delay in the early stages is critical to rehabilitation treatment being successful. Therefore, studying the sensitive and special effects of the Ten questions screening method is of vital importance in order to detect developmental delay in children of Mongolia.

6. Conclusion

Out of 7908 children aging from 9 months to 5 years old, 25.8% were detected to be developmentally delayed.

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