Amanda Shared "Unit 2 - CS" - 35 Picmonics
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Unit 2 - CS
Sensitivity
- Characteristics
- Rules Out
- Screening Test
- Formula
- TP / (FN+TP)
2 mins
Specificity
- Characteristics
- Rules In
- Confirmatory Test
- Formula
- TN / (TN + FP)
1 min
Case Control Study
- Observational
- Retrospective
- Compares those with disease to those without
- (Asks) "What happened?"
- Measurement
- Odds Ratio
47 secs
Cohort Study
- Observational
- Longitudinal
- Studies risk from exposure
- Retrospective
- (Asks) "Who developed disease?"
- Prospective
- (Asks) "Who will develop disease?"
1 min
Cross-Sectional Study
- Observational
- (Asks) "What's Happening?"
- Data at One Specific Point in Time
- (Finds) Frequency of Disease
- Measurement
- Prevalence
49 secs
Quantifying Risk: Contingency 2x2 Table Setup
- Disease
- Along Top (x axis)
- Exposure
- Along Side (y axis)
- A: Exposed and Diseased (Sick)
- B: Exposed and Healthy
- C: Not Exposed and Diseased (Sick)
- D: Not Exposed and Healthy
2 mins
Odds Ratio (OR)
- Use
- Case Control Studies
- Measures Association Between an Exposure and an Outcome
- Formula
- Odds of Exposure in Diseased (Sick) Group
- a / c
- Divided /
- Odds of Exposure in Healthy Group
- b / d
- Interpretation
- =1 Exposure does not affect odds
- > 1 Exposure increases disease
- < 1 Exposure decreases disease
2 mins
Attributable Risk (AR)
- Use
- Proportion Exposure Increases Disease
- Formula
- Incidence of Diseased (Sick)
- Equals =
- Exposed Group
- a / (a + b)
- Minus -
- Unexposed Group
- c / (c + d)
1 min
Relative Risk (RR)
- Use
- Used in Cohort Studies
- Formula
- Risk of Developing Disease
- Equals =
- Exposed Group
- a / (a + b)
- Divided by /
- Unexposed Group
- c / (c + d)
- When Low Prevalence Odds Ratio Approximates Relative Risk
2 mins
Positive Predictive Value (PPV)
- Proportion of Positive Tests that are True Positive
- Probability that Person with Positive Test has Disease
- Formula
- TP (True Positives)
- Divided by /
- All Positive Test Results
- TP + FP
- Considerations
- Varies Directly with Prevalence
1 min
Negative Predictive Value (NPV)
- Proportion of Negative Tests that are Truly Negative
- Probability that Person with Negative Test is Healthy
- Formula
- (TN) True Negatives
- Divided by /
- All Negative Test Results
- (FN + TN)
- Considerations
- Varies Inversely with Prevalence
1 min
Skin Anatomy
- Characteristics
- Epidermis
- Keratinocytes
- Melanocytes
- Dendritic Cells
- Merkel Cells
- Dermis
- Sweat Glands
- Hair Follicles
- Sebaceous Glands
- Hypodermis
3 mins
Age 2 Months - Developmental Milestones
- Gross Motor
- Holds Head Up, But Unsteady
- Moves Both Arms and Both Legs
- Fine Motor
- Opens Hands Briefly
- Tracks Objects to the Midline
- Language/Communication
- Produces Sounds Aside from Crying
- Reacts to Loud Noise
- Social / Cognitive
- Social Smile
- Recognizes Parents
- Soothed When Spoken to or Picked Up
2 mins
Age 4 Months - Developmental Milestones
- Gross Motor
- Keeps Head Steady Without Support
- Pushes Up on Elbows While on Tummy
- Fine Motor
- Holds a Toy in Hands
- Moves Hands Towards Mouth
- Language/Communication
- Cooing
- Turns to Voice
- Social / Cognitive
- Chuckles
- Enjoys Looking Around
- Looks at Hands With Interest
- Opens Mouth When Hungry
2 mins
Age 6 Months - Developmental Milestones
- Gross Motor
- Sits Propped Up On Hands
- Rolls
- Fine Motor
- Raking Grasp
- Language/Communication
- Makes Squealing Noises
- Blows "Raspberries"
- Turn-Taking in Sounds
- Social / Cognitive
- Laughs
- Enjoys Looking at Self in a Mirror
- Recognizes Familiar People
- Closes Lips to Signal Fullness
- Puts Objects in Mouth
- Reaches for Desired Toys
2 mins
Age 9 Months - Developmental Milestones
- Gross Motor
- Sits Up Independently
- Fine Motor
- Transfers Objects Between Hands
- Uses Fingers to Pull Food Toward Self
- Language/Communication
- Produces Various Sounds Like "mamamama" and "bababababa"
- Raises Arms to be Lifted Up
- Social / Cognitive
- Separation Anxiety
- Shows Facial Expressions
- Looks When Calling Name
- Smiles or Laughs at Peek-a-boo
- Looks for Dropped Objects Out of Sight
- Bangs Two Items Together
2 mins
Age 1 Year - Developmental Milestones
- Gross Motor
- Pulls Up to Stand
- First Steps
- Fine Motor
- Drinks From an Open Cup with Assistance
- Two-Finger Pincer Grasp
- Language/Communication
- Understands āNoā
- Waves "Bye-Bye"
- "Mama & Dada"
- Social / Cognitive
- Plays Pat-A-Cake
- Puts Block in Cup
- Searches for Hidden Toys
2 mins
Age 18 Months - Developmental Milestones
- Gross Motor
- Walks Independently
- Climbs On/Off Furniture Without Help
- Fine Motor
- Drinks from Open Cup Independently
- Scribbles
- Eats with Fingers
- Tries to Use a Spoon
- Stacks Three Blocks
- Language/Communication
- Attempts Three-word Phrases
- Follows One-step Commands
- Social / Cognitive
- Checks While Moving Away
- Points to Objects
- Engages With Toys Simply
- Copies Parent Doing Chores
- Extends Hands for Washing
2 mins
Age 2 Years - Developmental Milestones
- Gross Motor
- Kicks a Ball
- Runs
- Walks Up Stairs With Help
- Fine Motor
- Stacks Six Blocks
- Feeds Self With a Spoon
- Language / Communication
- Two-Word Phrases
- Points to Book Items as Prompted
- Demonstrates Varied Gestures
- Identifies Body Parts When Prompted
- Social / Cognitive
- Shows Empathy
- Holds and Manipulates Objects Simultaneously
- Engages With Multiple Toys
2 mins
Age 3 Years - Developmental Milestones
- Gross Motor
- Starts Dressing Independently
- Rides Tricycle
- Fine Motor
- Stack Nine Block Tower
- Threads Items Together
- Copies Circle
- Uses Fork
- Language / Communication
- Engages in Two-way Conversation
- 75% Speech Understood by Stranger
- Says First Name
- Social / Cognitive
- Avoids Hot Objects When Warned
- Joins Other Kids in Play
2 mins
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