Relating Risk Factors to Health Assignment
a. Cumulative incidence ratio (Risk Ratio) is the risk of getting the outcomes among
exposed group over the risk of getting the outcomes among unexposed group.
b. Incidence density ratio (rate ra
Estimate the mean waiting time among all patients using 95% confidence interval
Formula to construct Confidence Interval:
CI= X Z_(1-(2) /n
To construct 95% confidence interval, we have to remember that the formula includes sample
mean (), the desired con
Argita Dyah Salindri
PH 7017 / Dr. Lai
Chapter 3 Normal Distribution
Durations of clinical research studies awarded by a particular federal agency are
assumed to follow a normal distribution, with a mean of 24 months and a
Descriptive and Statistic Table
Outcome 3 Hay Fever
Social Economy Status
Mother Smoked When Pregnant
Mothers Age When P
A manufacturer of tobacco products plans to market a new brand of cigarette. The
regulatory commission needs to know the mean tar content for the new brand.
Analysis of a random sample of 25 of the new brand of cigarettes gives a mean tar
Chapter5 Statistical Inference Technique: Procedures for
Estimation sample statistic used to generate estimate of
2. Hypothesis Testing hyp about pop, support/reject hyp
unknown pop par
Hypothesis: directional (increasing, decreasing, more
Let say we're running for univariate analysis.
Low Birth Weight
In the variable view, we put "1 as low birth weight" and "2 as no low birth weight"
Independent Variable (let's take mom's age category)
Moms age category
In the variable
Test 1 Cheat Sheet
When Estimating for remember.
Depending on the relationship between the sample mean x and , we have two types of estimations
1. Point Estimations - estimating the best single numerical value of the unknown population parame
Mean Age (SD)
Country of Birth
Born in US
Above Poverty Line