... it is a waste of the limited available resources in terms of time and money when an answer can be accurately found from a smaller sample. ... recruiting more subjects than required can also be ...termed as unethical as the patients participate in a study with faith and an altruistic motive which should not be misutilized.
How to choose the right statistical test? Nayak, Barun K; Hazra, Avijit
Indian Journal of Ophthalmology/Indian journal of ophthalmology,
03/2011, Letnik:
59, Številka:
2
Journal Article
Recenzirano
Odprti dostop
Logistic regression is actually a multivariate analysis method that expresses the strength of the association between a binary dependent variable and two or more independent variables as adjusted ...odds ratios. ... one must remember that, there is no substitute to actually working hands-on with dummy or real data sets, and to seek the advice of a statistician, in order to learn the nuances of statistical hypothesis testing.
Aim: The aim of this study is to ascertain the prevalence of diabetic retinopathy (DR) in diabetic patients across the nation and attempt to establish history-based risk factors. Materials and ...Methods: A cross-sectional study of diabetic patients was conducted as an initiative of the All India Ophthalmological Society from 14th November to 21st November 2014. Known diabetics were evaluated voluntarily by members of the society at 194 centers using a structured protocol provided by the society for examination. The results were evaluated to ascertain the prevalence of DR in the population studied and to establish relation with gender, age, and history-based risk factors such as duration of diabetes, insulin use, and other end-organ disease using the Chi-square test. Results: A total of 6218 known diabetics were screened. Totally, 5130 data entry forms were considered suitable for further evaluation. About 61.2% were males, 88.6% were between 40 and 80 years of age, almost two-thirds of the patients were from the west and south zones, and over half had diabetes more than 5 years. The data set was predominantly urban 84.7% and 46.1% had no family history. DR prevalence in the entire data set was 21.7%. Prevalence was more in males (P = 0.007), diabetics more than 5 years (P = 0.001), those above 40 years (P = 0.01), insulin users (P = 0.001), and history of vascular accidents (P = 0.0014). Significantly 22.18% of patients detected with DR had a vision of 6/18 or better in the worse eye. Conclusion: The study reiterated the findings of earlier regional studies on a pan Indian scale and put data in perspective.
Residency training is the basis of good clinical and surgical practice.
The aim is to know the demographics, training experience, and perception of young ophthalmologists to improve the present ...residency programs in India.
Young ophthalmologists trained in India.
A survey was conducted by the Academic and Research Committee of the All India Ophthalmology Society, in 2014-2016 of young ophthalmologists (those trained between 2002 and 2012, with 2-10 years' postresidency experience) to gauge teaching of clinical and surgical skills during the postgraduate residency program.
Statistical Package for Social Sciences version 16.
Of the 1005 respondents, 531 fulfilled inclusion criteria. Average age was 32.6 years (standard deviation SD 4). On a scale of 0-10, clinical skills teaching was graded as (mean, SD): Slit lamp examination (7.2, SD 2.8), indirect ophthalmoscopy (6.2, SD 3.3), gonioscopy (5.7, SD 3.4), perimetry (6.2, SD 3.2), optical coherence tomography (4.6, SD 4), and orthoptic evaluation (4.3, SD 3.1). The mean (SD) and median of surgeries performed independently was intracapsular cataract extraction 3.0 (14.9), 0; extracapsular cataract extraction 39.9 (53.2), 18; small incision cataract surgery 75.3 (64.4), 55; phacoemulsification 30 (52.6), 1; pterygium excision 31.5 (43.5), 15; dacryocystectomy 20.3 (38.1), 4; dacryocystorhinostomy 11.7 (26.2), 2; chalazion 46.4 (48.3), 30; trabeculectomies 4 (14.9), 0; strabismus correction 1.4 (4.9), 0; laser-assisted in situ Keratomileusis 1.5 (12.2), 0; retinal detachment 1.5 (12.5), 0; vitrectomy 3.0 (17.0), 0; keratoplasty 5.2 (17.8), 0; eyelid surgery 8.6 (18.9), 2 and ocular emergencies 41.7 (52.4), 20. Observed and assisted surgeries were more common. However, the range of grading was 0-10 in all categories.
Residency training in India varies considerably from program to program. Standardization is needed to assure all graduates are competent and render consistent quality of service.
The COVID-19 pandemic has threatened the humanity at a global level to a large extent by the burden of the disease with significant mortality and to a certain extent as a byproduct of the necessary ...efforts to contain the same. There is a significant impact on the health care system, as we not only have to contain pandemic, but continue to treat our non-COVID-19 patients in a safe and responsible manner. Ophthalmology practice in general and glaucoma in particular needs certain modifications and additional precautions while examining as well as managing these patients keeping their and our safety in mind. As the lockdown relaxations are in vogue we need to learn how to deal with our regular patients as well in addition to emergency care. This paper presents the consensus-based guidelines by an expert panel on how to restart glaucoma practice during this COVID-19 time. These guidelines will be applicable across the country and should help ophthalmologists and glaucoma specialist to restart their practices while safeguarding the patients and their own selves from getting infected.
Purpose: The aim of this study was to study the perception of residency trainers about an optimum residency program. Methods: A survey, using a pre-validated questionnaire, was conducted by the ...Academic and Research Committee of the All India Ophthalmological Society, in 2019-20 with questions directed to teachers in medical colleges and national board of examination's ophthalmology residency programs on demography, teaching experience, imparting clinical and surgical skills, ideal academic schedule and dissertation in the post-graduate residency program. Results: The response rate in the survey was 47.6%. Valid responses were obtained from 309 residency trainers. Of these, 132 of 309 (42.7%) were females. The mean age was 45.3 ± 9.5 years, range 26-68 years. The trainers believed that on a scale of 0-10, clinical skills teaching should be taught, mean ± SD: slit lamp 9.8 ± 0.7; indirect ophthalmoscopy 9.3 ± 1.3; gonioscopy 9.2 ± 1.5; perimetry 8.9 ± 1.5; OCT 8.4 ± 1.9; applanation tonometry 9.5 ± 1.2 and orthoptic evaluation 8.1 (±1.9). A resident should ideally perform independently surgeries (median, inter-quartile range IQR): SICS 50 (IQR 40-100); phaco 50 (20-60); pterygium excision 20 (10-40); DCR 10 (5-20); chalazion 20 (10-50), trabeculectomy 7 (5-15); strabismus 5 (2-10), LASIK and retinal detachment 0. Ideally there should be four lectures, four seminars, four case presentations, five journal clubs and four wet labs every month. Conclusion: Teachers expected their wards to become competent professionals. There was near unanimity about the content of clinical skills training, non-medical skills and academics, but there was a significant variation on extent of surgical training that should be imparted to the residents.
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