Adolescent is the most pivotal period of life, yet one of the most vulnerable times for physical ailments. As per the census 2011, adolescents (13-19 years) form a large section of population of about 20.91% that is, 231.9 million in our country. In Odisha it is 19.71% ( B.K. Malik, 2015).

There are widespread gynaecological disorders among females and the symptoms are often ignored until it makes something worse. Polycystic Ovarian Syndrome is the one out of them, which is now a days faced by the adolescents. This is often called the “Thief of Womenhood” as it leads to disturbed menstrual cycle and anovulation ( Joshi et al., 2014).

Globally, the prevalence of PCOS among adolescents is 4- 12%. In Indian adolescents at Andhra Pradesh, South India among 460 girls aged 15 to 18 years, was estimated to be 9.13%. And in Odisha it is around 12%. Thus this draws attention to the issue of early diagnosis in adolescent girls ( Nidhi R. et al., 2011; Rajkumari P., 2016).

A heap of symptoms has been allied with PCOS like acne, patchy alopecia, hirsutism, infertility, obesity, skin tags, and increased androgen level ( Fauser et al., 2012). Adolescents with PCOS are also at increased risk of hypertension ( Coviello A.D. et al., 2006). Along with the biological and physiological aspect of PCOD, it has also adverse outcomes on mood (mood disturbance and low self-esteem) and poor psychological well-being. ( Deeks A.A. et al., 2010).

Hence early detection and timely intervention of PCOS in adolescents is very vital in preventing its long term consequences and therefore, more research studies are required to find answers regarding various theoretical and clinical aspects of the disease. And nurses are the persons who are well aware of it and can utilize their skill in educating the adolescents, school teachers, other healthcare providers and community as a whole regarding life-style modification, stress management and adoption to coping strategy, future impact and techniques to overcome it.

World Health Organization estimates that PCOS affected around 116 millions (3.4%) of female worldwide in 2012. Global prevalence of PCOS is about 2.2% - 26%. ( Vos T. et al., 2012).

According to an article published in Indian Express (2013), In India, there is a gradual increase in the prevalence of PCOS, mostly at Bangalore due to lifestyle changes ( Tabassum K., 2014).

Poly cystic ovarian syndrome (PCOS) and infertility go hand in hand, because it interrupts ovulation. In addition It may raise the risk of obesity, cardiovascular disorders and diabetes mellitus due to elevated insulin level ( Almendrala A., 2015).

An exploratory survey study was conducted in selected pre-university colleges of Udupi to identify high risk factors and effectiveness of an awareness programme on PCOS among 752 students revealed that, 102 (13.6%) participants are at moderate risk for PCOS. Also the posttest result reveals a significant increase in knowledge level (p<0.01) on PCOS after the awareness program ( Shobha, Devi E.S. and Prabhu A., 2014).

Personality and psychiatric disorders in women affected by PCOS was studied among 60 subjects at Italyby the administration of the Millon Clinical Multiaxial Inventory-III. The result reveals that personality disorders [4.1% schizoid, depressive, sadistic, negativistic (passive–aggressive), and masochistic, 6.1% avoiding, 12.2% dependent, 20.4% histrionic, 16.3% narcissistic, 2.0% obsessive–compulsive], and psychiatric disorders: 10.2% anxiety, 2.0% somatoform disorder and bipolar disorder, 16.3% major depressive disorder and also 44.9% delusional disorder and 4.1% thought disorder was found ( Scaruffi E. et al., 2014).

A study was conducted by the nurses on effect of lifestyle changes on symptoms of PCOS in obese girls (543) at Faculty of Nursing, Benha University. All girls are screened for PCOS and the diagnosed girls (140) are given diet therapy and exercise intervention for a period of 1 year. In the post intervention session, it was observed a highly significant improvements of menstrual frequency problems, weight loss (P<.001), highly significant decreases in waist circumference (P<.001), highly significant reduction in hirsutism and acne ( Elmenim S, and Emam A., 2016).

• To find the effectiveness of video assisted teaching module.
• To do the comparison between the pre and post test knowledge scores of adolescent girls on polycystic ovarian syndrome with selected demographic variables.
• To find the association between the post test knowledge scores of adolescent girls on polycystic ovarian syndrome with selected demographic variables.

H₀₁ - There will be no significant difference between the knowledge scores of adolescent girls on polycystic ovarian syndrome before and after administration of video assisted teaching module.

H₀₂ - There is no significant association between the post test knowledge scores of adolescent girls on polycystic ovarian syndrome with selected demographic variables.

One group pre and post test design with pre experimental approach was used. Using a convenience sampling technique, the adolescents (60 nos.) were subjected to pretest followed by VATM on knowledge regarding PCOS and finally the participants were subjected to post test at Gayatri women's +2 science college, Berhampur, Ganjam, Odisha. The data were collected by using a structured questionnaire which has two sections, namely demographic profile and knowledge assessment questionnaire (Anatomy and physiology of female reproductive system, general aspect, treatment and prevention) on PCOS. The Modified Imogene King's goal attainment conceptual framework has been used for the study.

The level of knowledge of participants is scored as - very poor (up to 17.64), poor (18-38.23), Average (39-58.82), Good (59-79.41), very Good (80-100) (Table 1).

Table 1. Scoring Process

Area wise comparison of mean, SD, Mean percentage of pre-test and post-test knowledge score shows that, overall pre-test mean score was (13.96 ± 3.07), which is 41.05% of maximum score and average knowledge, whereas it was 68.85% during post-test showing a difference of 27.8% of effectiveness and having a very good knowledge. It was also observed that the difference between the pre and post-test area wise mean score values vary from 21.1% to 34.54%. Therefore, video assisted teaching module was effective in both area wise and overall (Table 2).

Table 2. Assessment of the Effectiveness of Video Assisted Teaching Module

O-give curve showing the comparison of pre and post test cumulative percentage of KS of adolescents regarding PCOS shows that, post test score lies to the right of the pre test score; over the entire range showing that post score th were higher than the pre test scores. In the pre test 25^thpercentile score was 11.2 whereas it was 19.9 in post test. The 50 percentile score for pre test was 13 whereas it was 22 in post-test. Similarly 75 percentile score was 14.9 whereas it was 26.2 in post test. It shows that video assisted teaching module was effective overall (Figure 1).

Figure 1. O-Give Curve showing Comparison of Pre and Post Test Cumulative Percentage of KS of Adolescents

The table value 2.326 (99% level of significance), DF-59, (p value <0.01) level is highly significant. Thus Paired 't' test shows that highly significant difference was found in all areas like- Anatomy and physiology, Knowledge on PCOS, Treatment of PCOS, and Prevention of PCOS (Table 3).

Table 3. Paired 't' Value of Pre and Post-Test KS of Adolescents Regarding PCOS

Chi square (χ²) reveals that, no significant association was found between post-test KS when compared to age, residence, monthly family income, and previous source of information (Table 4).

Table 4. Association between of Post-Test KS of Adolescents with their Selected Demographic Variables

Percentage wise distribution of adolescents, according to their area of residence reveals that most of the adolescents (55%) were residing in rural area whereas only (45%) of them were from urban areas.

The above study findings were incongruent to the study by Kalpana S.P. (2013) done on effectiveness of structured teaching programme on knowledge of adolescents regarding PCOS at selected pre-university colleges of Bangalore, whose findings reveals that the majority of the adolescents that is 64.16% were residing in the urban area.

• A similar study may be conducted by nurses on a larger sample for wider generalization of the study.
• Health education module, manuals and selfinstruction module may be developed for the greater effectiveness and maximum utilization of the study.
• The comparative study can be conducted on urban and rural areas regarding PCOS among adolescents.

Nationwide the reproductive Health of females are of major concern for the underpinning of a healthy society. PCOS is the most common endocrine disorder among adolescents and a reproductive group of women. And fortunately this can be prevented through creating awareness among adolescents, as they are the future of society. Nurses are key persons of the health care team, and play a vital role in the promotion and maintenance of health. They can give adequate teaching to the risk groups, with whom they are coming across in community and hospitals, regarding risk elimination, behaviour modification, early identification, new diagnostic modalities and treatments available. This study also proves the same, that is VATM is effective in increasing the knowledge on PCOS among adolescents so that the unborn morbidities can be better prevented.