Carlos Shared "01 Biostat + Psych" - 95 Picmonics
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01 Biostat + Psych
Cross-Sectional Study
- Observational
- (Asks) "What's Happening?"
- Data at One Specific Point in Time
- (Finds) Frequency of Disease
- Measurement
- Prevalence
49 secs
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
Sensitivity
- Characteristics
- Rules Out
- Screening Test
- Formula
- TP / (FN+TP)
2 mins
Specificity
- Characteristics
- Rules In
- Confirmatory Test
- Formula
- TN / (TN + FP)
1 min
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
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
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
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
Attention-Deficit Hyperactivity Disorder (ADHD) Assessment
- Assessment
- Inattention
- Incomplete Tasks
- Easily Distracted
- Hyperactivity
- Impulsiveness
- Disruptive
- Considerations
- Two Areas of Life
- Onset by Age 12
- Symptoms > 6 Months
3 mins
Attention-Deficit Hyperactivity Disorder (ADHD) Interventions
- Drug Therapy
- CNS Stimulants
- Amphetamine
- Methylphenidate
- Bupropion (Wellbutrin)
- Atomoxetine (Strattera)
- Guanfacine (Intuniv)
- Considerations
- Manage Disruptive Behavior
- Provide Simple Instructions
2 mins
Delirium
- Mechanism
- Rapid Onset
- Reversible
- Assessment
- Hallucinations
- Decline in Cognition
- Short Attention Span
- Rapid Speech
- Change in Activity Level
- Mood Swings
2 mins
Causes of Dementia
- Reversible Causes
- Intoxication or Medications
- Depression
- Normal Pressure Hydrocephalus
- Vitamin B12 Deficiency
- Metabolic Conditions
- Irreversible Causes
- Lewy Body Dementia
- Prion Disease
- Pick's Disease
- AIDS Dementia
- Alzheimer's Disease
- Multi-infarct (Vascular) Dementia
2 mins
Hallucinations, Illusions, Delusions
- Hallucination
- No External Stimulus
- Auditory
- Visual
- Olfactory
- Gustatory
- Tactile
- Illusion
- Misinterpretation of Stimulus
- Delusion
- Fixed, False Belief
2 mins
Schizophrenia Assessment
- Positive Symptoms
- Hallucinations
- Delusions
- Associative Looseness
- Negative Symptoms
- Flat Affect
- Poverty of Thought
- Absence of Something that Should be Present
- Cognitive Symptoms
- Illogical Thinking
- Impaired Judgment and Memory
- Affective Symptoms
- Dysphoria
2 mins
Schizophrenia Interventions
- Drug Therapy
- Antipsychotics
- Interventions
- Build Trust
- Assistance with Self-care
- Reality Testing
- Monitor for Neuroleptic Malignant Syndrome
- Monitor for Tardive Dyskinesia
- Family Therapy
2 mins
Anxiety Assessment
- Mild
- Increased Alertness
- Heightened Perception
- Moderate
- Perception Narrowed
- Short Attention Span
- Shaking
- Severe
- Ineffective Problem Solving
- Automatic Behavior
- Hyperventilation
- Panic
- Hallucinations
- Inability to Function or Communicate
2 mins
Suicide Risk Factors
- Depression
- Previous Attempt
- No Support System
- Access to Firearms or Medications
- Substance Abuse
- Physical or Sexual Abuse
- Chronic Illness or Pain
- Extremes of Age
2 mins
