Biostatistics Flashcards

1
Q

Levels of prevention + examples and target population

A

Primordial : smoking ban | general population, patients at risk
Primary : prevents disease onset, immunization, iodine supplementation | susceptible
Secondary : early diagnosis and prompt treatment,screening tests| asymptomatic
Tertiary : prevent compliations| rehab | symptomatic

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2
Q

Level of prevention that reduces INCIDENCE of disease

A

primary

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3
Q

Level of prevention that reduces PREVALENCE of diseases

A

secondary

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4
Q

Goals of public health

A

health promotion

disease prevention

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5
Q

Independent vs Dependent variables

A
Independent = cause; can be manipulated to create an effect
Dependent = effect
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6
Q

act of examining or studying a segment of the population to represent the whole

A

Sampling

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7
Q

group from which REPRESENTATIVE INFORMATION is desired and to which inferences will be made

A

Target population

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8
Q

variables that confuses the results of the study

A

confounders

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9
Q

Despcriptive vs Inferential statistics

A

Descriptive - use of graphs or table to better summarize or present data

Inferential - use of generalizations or conclusions from presented data; includes testing of hypothesis

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10
Q

Primary vs Secondary source of data

A

Primary - firsthand information from the investigator

Secondary- from existing data

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11
Q

complete enumeration of a popiulation

A

census

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12
Q

How often is the Philippine census taken

A

every 5 years (next,2022)

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13
Q

2 methods of conducting census; differentiate

A

Defacto - person regardless of address

Dejure - address

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14
Q

Vital events

A

Birth, marriage, death

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15
Q

Quantitative vs Qualitative data

A

Quantitative - discrete, continuous

Qualitative - nomnal ordinal, interval, ratio

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16
Q

year of birth is what type of qualitative data

17
Q

lowest form of qualitatige data

18
Q

age is what type of qualitative data

A

ratio [FIXED ZERO]

19
Q

When must birth certificate be filed after birth

A

within 30 days

20
Q

When should death certifiate be filed

A

within 48H

except in epidemics: within 5 days after burial

21
Q

who can issue death certificate

A

1) AP
2) MHO
3) Mayor

22
Q

Cause vs Manner of death

A

cause of death: physiologic and pathologic causes leading to death

manner of death: circumstantial - suicide, homicide

23
Q

type of death written in birth certificate

A

Immediate - direct cause of death
Antecedent - complication
Underlying - disease; most IMPORTANT

24
Q

65 yo male with hx of uncontrolled DM had CVD which ld to confiemet. during the course of hospitalization, patient developed PNA and diead. Cause of death

A

Immediate: PNA
Andecendent : CVD
Underlying uncontrolled DM

25
Circumstances when a normal death certificate cannot be issued
DOA Foul play death before recovery from surgery or anesthesia
26
important characteristics in data collection
``` accuracy precision validity reliabilty completeness objectivity ```
27
trueness of test measurement
accuracy
28
accuracy is related with
PPV, NPV
29
consistency and reproducibility of test; absence of random variation
precision
30
random error leads to
reduced precision
31
systemic error lead to
reduced accuracy
32
adequacy and representativeness of sample size
completeness
33
screening test validity is associated with
sensitivity,specificity, false(+), false (-
34
ability of screening test to label positive those who have the disease
Sensitivity | [SCREENING TEST]
35
ability of test to label negative those who are negative
Specificity | [CONFIRMATORY TEST]
36
SPINS-SNOUT
Specificity (+) = rule in | Sensitivity (-) = rule out
37
issues with screening
BIASES
38
types of biases
Lead time - increase survival because early dx but same outcome Length - benign vs agressive disease Over diagnosis Self Selection
39
used for assessing value of performing dx test
likelihood ratio