BTR

Question 1

Difference b/w Triad , Triangle and adv epidem triangle

Answer 1

Triad is simple
Triangle has time factor
Adv is elaborative

Question 2

Incubation period?

Answer 2

Time bw entry of organism and symptom

Question 3

Case fatality rate is a _________ ?

Answer 3

Misnomer (proportion)

Question 4

QL of yellow fever

Answer 4

6 days

Question 5

Elimination dates :
Guinea worms
Leprosy
Yaws
NT

Eradication :
Small pox?

Answer 5

2000
2005
2016
2016

8 may 1980

Question 6

What kind of surveillance does HIV has?

Answer 6

Sentinel

Question 7

Virulence of disease

Answer 7

Case fatality rate

Question 8

Communicability of disease

Answer 8

Secondary attack rate

Question 9

Serial interval ?

Answer 9

Time btw 1° case and 2° case.

Question 10

Generation time

Answer 10

Time btw entry of organism and max communicabilty.

Question 11

Lead time

Answer 11

Time saved by picking up disease earlier from point D (usual time of dx)
To Point B (Pathological changes) by screening.

Question 12

Case control

Answer 12

Disease to exposure
(Go back in time)

Question 13

Cohort (P, R)

Answer 13

Prospective(exposure to disease but disease hasn’t happened yet)

Retrospective( exp to disease but both has happened)

Question 14

Nested case control

Answer 14

Case and control chosen from a defined cohort and then folled for exposure
For rare ds.

Question 15

Epidemi. Study best for MULTIPLE EXPOSURE?

Answer 15

Case control

Question 16

Epi study best for OUTCOMES?

Answer 16

Cohort studies

Question 17

Best for RARE DS.

Answer 17

CASE CONTROL

Question 18

Best for RARE INVESTIGATION

Answer 18

Nested CASE CONTROL

Question 19

Incidence study

Answer 19

Cohort

Question 20

Prevalence study

Answer 20

Cross sectional

Question 21

Intention to treat

Answer 21

Randomised control trial

Question 22

Berksonian bias

Answer 22

Hospital based selective bias

Question 23

Case control Bias

Answer 23

Recall
Selection
Berksonian

Question 24

Cohort Bias

Answer 24

Attrition
Hawthrone (attention) bias

Question 25

Odds ratio

Answer 25

A×D
/
B×C

Question 26

Most Imp HILL’S CRITERIA for causality?

Answer 26

Temporality

Question 27

Ability of test to correctly identify those WITH the disease

Answer 27

Sensitivity

Question 28

Ability of test to correctly identify those WITHOUT the disease.

Answer 28

Specificity

Question 29

True positive rate
True negative rate

Answer 29

Sensitivity
Specificity

Question 30

Diagnostic power of a screening test

Answer 30

PPV

Question 31

Confidence Interval

Answer 31

Mean ± 2(SE)

Question 32

Standard error of MEAN

Answer 32

SD
__________

Root of n

Question 33

Standard error of proportion

Answer 33

Under root of (pq/n)

Question 34

Burden of disease

Answer 34

Proportional mortality rate

Question 35

Indicator for std of treatment

Answer 35

Survival rates

Question 36

Best air pollution indicator

Answer 36

Sulphur dioxide

Question 37

Secondary pollutant

Answer 37

Ground level ozone

Question 38

Best biological air pollution indicator

Answer 38

Lichens

Question 39

Greenhouse effect maximum Caused by

Answer 39

Water vapor

Question 40

Soiling index denotes

Answer 40

Smoke

Question 41

Grit index

Answer 41

Dust

Question 42

Sling psychrometry

Answer 42

Humidity

Question 43

Globe thermometre

Answer 43

Radiant heat
Effective temp

Question 44

Kata thermometre

Answer 44

Cooling power of air
Low velocity

Question 45

Brightness of source or luminous intensity described by.

Answer 45

Candela

Question 46

Rate of light emission, also called flux described by.

Answer 46

Lumen

Question 47

Unit for total light on Surface
(Illuminance)

Answer 47

Lux

Question 48

Tolerable sound level.

Answer 48

< 90dB

Question 49

Sewage strength

Answer 49

Bod>300
Cod>500
Presence of suspended solids

Question 50

Best method for solid waste disposal.

Answer 50

Controlled tipping / SANITARY LANDFILL / Trench method

Question 51

Talk series by experts with q and A.

Answer 51

Symposium

Question 52

4 to 8 experts in front of audience with Q and A.

Answer 52

Panel discussion

Question 53

6-12 people discussing

Answer 53

Focussed group discussion