Friday, September 16, 2016

profile of case studies: statistical analysis possibilities


for most studies that assess profile The results will expressed as mean and standard deviation values or median and range for interval variables and as proportions for categorical and ordinal variables. Correlation of interval variables will be analyzed using Pearson’s correlation test. If normal distribution could be assumed, comparison of interval variables between two or more independent samples will be analyzed using the independent t-test or one-way ANOVA, respectively. Interval variables without normal distribution, ordinal and categorical variables will be analyzed using the Wilcoxon-Mann-Whitney or Kruskall-Wallis tests when appropriate. Proportions will be analyzed using Pearson's chi-square test; Fischer’s exact test will be used as an alternative in contingency tables of 2x2 variables. A p-value of <0.05 will be considered significant; when using sequential Mann-Whitney tests, p-value significance was calculated using the Bonferroni correction. and for prevalence studies: 1. prevalence is expressed as percentage studies with numertaor and denominator 2. incidence may be expressed with newly diagnosed cases in numerator 3. Subgroups may be studied with modified Pearsons T test 4. If the sample size more than 500, Spearman test may be applicable between subgroup correlations. Kondekar

Monday, February 22, 2016

thesis topics: clinical profiles: descriptive studies

clinical profile studies are descriptive studies. groups numbers percentages. no heavy statistics; usually for a new pattern search or when you have nothing in mind and your guide or EC creates obstacles for RCT or novel ideas.
clinical profile of cases  with ..........................................
write any commonly seen disease, morbidity, sign, symptom, report etc

example
clinical profile of patients presenting with non watery loose motions
clinical profile of dengue like patients with tests negative
clinical profile  of patients with SAM in hospitalized patients
clinical profile of patients with SGOT>PT ratio > 1

as its an observational study, its u who has found something new.. and want to know whats happening.

Dr kondekar