Biostatistics Assignment 2

Running head: BIOSTATISTICS ASSIGNMENT 2
Biostatistics Assignment 2
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1BIOSTATISTICS ASSIGNMENT 2
Part 1: Dyslipidaemia Study in Diabetes
Question 1
The variables used in this database of data analysis were presented in the following table
along with the variable label with the classification of the variable.
Variable Classification Variable Label
ID Discrete ID Number
Age Continuous ID Number
Age_gr Ordinal Age Group
Gender Nominal Gender
Occupation Ordinal Occupation type
Physical_activity Nominal Physical activity level
weight Continuous Weight in Kg
Height Continuous Height in meter
BMI Discrete BMI in Kg/m2
BMI_gr Ordinal BMI Group
BP_diastolic Discrete Diastolic BP
BP_systolic Discrete Systolic BP
HTN Nominal Hypertension
Duration_diabetes Discrete Duration of Diabetes
Duration_diabetes_gr Ordinal Duration of Diabetes Group
HbA1c Discrete HbA1c
HbA1c_gr Nominal HbA1c group
Insulin Nominal Takes insulin
Duration_insulin Discrete Duration of insulin (years)
T.Chol Discrete Total Cholesterol
T_Chol_gr Nominal Total Cholesterol group
TG Discrete Triglyceride
TG_gr Nominal Triglyceride group
HDL Discrete HDL Cholesterol

2BIOSTATISTICS ASSIGNMENT 2
HDL_gr Nominal HDL Cholesterol group
LDL Discrete LDL Cholesterol
LDL_gr Nominal LDL Cholesterol group
Creatinine Discrete Serum Creatinine
Createnine_gr Nominal Serum Creatinine
TC_HDL Discrete TC_HDL ratio
LDL_HDL Discrete LDL_HDL ratio
Dyslipidemia Nominal Dyslipidaemia
Question 2
Variable Dyslipidaemia (% or median & IQR or mean & SD)
Yes No
HbA1c Mean: 10.9; SD: 4.27 Mean:7.4; SD:1.84
BP diastolic Mean: 81.84; SD: 11.1 Mean: 77; SD: 10.6
Insulin status:
Yes 84.8% 15.2%
No 84.2% 15.8%
Age group:
< 40 yrs. 81% 19%
40 - 49 yrs. 87.4% 12.6%
50 - 59 82.2% 17.8%
≥ 60 yrs. 89.7% 10.3%
It can be interpreted from the above data analysis and tabular presentation that the HbA1c
level appears to be higher in the population suffering from dyslipidaemia. In the population
suffering from dyslipidaemia, the diasolic blood pressure is also higher than the population
not suffering from dyslipidaemia. The percentage of people taking insulin and also suffering
from dyslipidaemia has been found to be comparatively higher than the percentage of people
not taking insulin. From the above analysis it can be interpreted that the prevalence of
Dyslipidaemia suffering also increases with the increasing age.
Question 3
The bar graph was selected for graphical comparison in the following comparative analysis.
Comparative bar graph can help visually compare the two relative factors with their ratios.
The bar graph can be used for visual guidance of data comparison without any meaning
testing. This is the reason to select comparative analysis based on a bar graph for the
following part of the data analysis.