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README.md

Link to CommonDataModel

You must filter your queries with data types

  • ie the measurement_type_concept_id column!

Source Tables (mimic)

  • when measures are mapped to standard concepts (SMOMED) measurement_concept_id != 0, and you may use the non-omop mimic itemid

  • else measurement_concept_id = 0, and you should select measures with: measurement_source_concept_id

  • you can determine the measurement_source_concept_id by looking in the concept table, where concept_code is the MIMIC itemid

  • when visit_detail_id is assigned, this is a calculated value!

charteevents

  • rows in error have not been exported from mimic

labevents

  • logical Observation Identifiers Names and Codes (LOINC) = database and universal standard for identifying medical laboratory observations loinc.csv
  • abnormal values from labevents do not have any equivalent in OMOP. The ranges should be prefered, but are not yet provided in MIMICt

microbiologyevents

outputevents

inputevents_mv

  • the patient weigth has a measurement_type_concept_id = 44818701 (from physical examination) and a concept_id = 3025315 (body weight)
  • this is similar to the weight comming from chartevents

Mapping used for measurement_concept_id

charteevents

labevents

microbiologyevents

outputevents

Derived value

  • derived values, should be populated with time
  • the following have already been done
    • corrected calcemia, kaliemia, P/F ratio, corrected osmolarity from chartevents and labevents
    • Weight, height, LVEF from noteevents
    • BMI from chartevents and noteevents
  • derived_values

Examples

Introduction

different date types

-- you must filter your queries with data types !
SELECT concept_name, concept_id, COUNT(1)
FROM measurement
JOIN concept ON measurement_type_concept_id = concept_id
GROUP BY concept_name, concept_id ORDER BY COUNT(1) DESC;
concept_name concept_id count
From physical examination 44818701 257715284
Labs - Chemistry 2000000011 7526424
Output Event 2000000003 4349218
Labs - Hemato 2000000009 3023959
Labs - Blood Gaz 2000000010 1161954
Derived value 45754907 1020678
Labs - Culture Organisms 2000000007 363506
Labs - Culture Sensitivity 2000000008 267350
Lab result 44818702 5032

different operator types

SELECT distinct operator_concept_id, concept_name
FROM measurement
JOIN concept on operator_concept_id = concept_id;
operator_concept_id concept_name
4172704 >
4171754 <=
4171756 <
4171755 >=
4172703 =

From physical examination

the most frequent items, by using omop concept_id

SELECT concept_name, concept_id, count (1)
FROM measurement
JOIN concept ON measurement_concept_id = concept_id
WHERE measurement_type_concept_id = 44818701                      		-- concept_name = 'From physical examination'
GROUP BY concept_name, concept_id ORDER BY count(concept_name) DESC
LIMIT 10;
concept_name concept_id count
No matching concept 0 181101521
Respiratory rate 3024171 9474378
Heart rate 3027018 7942776
Oxygen saturation in Arterial blood 3016502 7807775
BP systolic 3004249 6421226
BP diastolic 3012888 6397068
Mean blood pressure 3027598 6379838
Body temperature 3020891 3964808
Body weight 3025315 3729554
Heart rate rhythm 3022318 3303151

the most frequent items, by using non omop mimic itemid

SELECT concept_name, concept_code, count (1)
FROM measurement
JOIN concept ON measurement_source_concept_id = concept_id
WHERE measurement_type_concept_id = 44818701                      		-- concept_name = 'From physical examination'
GROUP BY concept_name, concept_code ORDER BY count(concept_name) DESC
LIMIT 10;
concept_name concept_id count
Heart Rate 211 5180809
calprevflg 742 3464326
SpO2 646 3418917
Respiratory Rate 618  3386719
Heart Rhythm 212 3303151
Ectopy Type 161 3236350
Code Status 128 3216866
Precautions 550 3205052
Service Type 1125 2955851
Heart Rate 220045 2762225

weights, by using omop measurement_concept_id

SELECT MIN(value_as_number), AVG(value_as_number), MAX(value_as_number)
FROM measurement
WHERE measurement_concept_id = 3025315                                          -- concept.concept_name = 'Body weight'
AND measurement_type_concept_id = 44818701;                                     -- concept_name = 'From physical examination'
min avg max
44.1798608 83.8148454007945714 170

weights, by using non omop mimic items

SELECT MIN(value_as_number), AVG(value_as_number), MAX(value_as_number)
FROM measurement JOIN concept ON measurement_source_concept_id = concept_id
WHERE concept_code = '762' or concept_code = '226531' or concept_code = '226512'
AND measurement_type_concept_id = 44818701;                                     -- concept_name = 'From physical examination'
min avg max
44.1798608 81.5634084520612165 170

From labs

the most frequent items

SELECT measurement_source_value, count (1)
FROM measurement
WHERE measurement_type_concept_id = 2000000009                                  -- concept_name = 'Labs - Hemato'
GROUP BY measurement_source_value ORDER BY count(1) desc 
LIMIT 10;
measurement_source_value count
Hematocrit 2710
Hemoglobin 2559
Platelet Count 2096
White Blood Cells 1736
MCHC 1728
MCH 1727
Red Blood Cells 1727
MCV 1727
RDW 1726
PTT 1315

white blood cells values by using LOINC classification, ie 804-5 or 26464-8

SELECT MIN(value_as_number), AVG(value_as_number), MAX(value_as_number)
FROM measurement 
JOIN concept ON measurement_source_concept_id = concept_id
WHERE concept_name ILIKE '%loinc:[804-5]' OR concept_name ILIKE '%loinc:[26464-8]'
WHERE measurement_type_concept_id = 2000000009                                  -- concept_name = 'Labs - Hemato'
min avg max
2.2 8.2142857142857143 23.5

white blood cells value by non omop mimic items

SELECT MIN(value_as_number), AVG(value_as_number), MAX(value_as_number)
FROM measurement JOIN concept on measurement_source_concept_id = concept_id
WHERE concept_code = '51300' or concept_code = '51301'
WHERE measurement_type_concept_id = 2000000009                                  -- concept_name = 'Labs - Hemato'
min avg max
2.2 8.2142857142857143 23.5

From cultures

Nb of negative blood cultures

SELECT count(1)
FROM measurement
where measurement_type_concept_id = 2000000007   				-- concept.concept_name = 'Labs - Culture Organisms'
and value_as_concept_id = 9189;                  				-- concept.concept_name = 'Negative'

count

287523

Main place of collection

SELECT concept_name, concept_id
FROM concept
WHERE concept_id IN
	 (SELECT distinct measurement_concept_id
         FROM measurement
         WHERE measurement_type_concept_id = 2000000007)                       -- concept.concept_name = 'Labs - Culture Organisms'
LIMIT 10;
concept_name concept_id
Bacteria identified in Unspecified specimen by Culture 3002619
Virus identified in Unspecified specimen by Immunofluorescence 3006753
Bacteria identified in Synovial fluid by Culture 3006761
Fungus identified in Blood by Culture 3009171
Bacteria identified in Catheter tip by Culture 3009986
Toxoplasma gondii Ab [Presence] in Serum 3011392
Bacteria identified in Bronchial specimen by Aerobe culture 3015532
Bacteria identified in Body fluid by Culture 3016727
Cytomegalovirus IgG Ab [Presence] in Serum 3016816
Bacteria identified in Cerebral spinal fluid by Culture 3016914
Bacteria identified in Sputum by Culture 3023419

most frequent microorganisms in blood culture

SELECT concept_name, value_as_concept_id
FROM measurement m
JOIN concept c on c.concept_id = m.value_as_concept_id
WHERE measurement_type_concept_id = 2000000007        				-- concept.concept_name = 'Labs - Culture Organisms'
And value_as_concept_id != 9189                       				-- concept.concept_name = 'Negative'
AND measurement_concept_id = 46235217                 				-- concept.concept_name = 'Bacteria identified in Blood product unit.autologous by Culture'
GROUP BY concept_name, value_as_concept_id order by count(1) desc;
concept_name value_as_concept_id
Staphylococcus, coagulase negative 4020318
Klebsiella pneumoniae 4209452
Staphylococcus aureus 4149419
Pseudomonas aeruginosa 4198675
Enterococcus raffinosus 4011481
Acinetobacter baumannii 4235587
Bacteroides fragilis group 4213634
Corynebacterium 4299363

resistance profile for Staph. Aureus

-- fact_id_1 is always the organisms and fact_id_2 the antibiotics tested
SELECT measurement_source_value, value_as_concept_id, concept_name
FROM measurement
JOIN concept resistance ON value_as_concept_id = concept_id
JOIN fact_relationship ON measurement_id =  fact_id_2
JOIN
(
	SELECT measurement_id AS id_is_staph
	FROM measurement m
	WHERE measurement_type_concept_id = 2000000007        			-- concept.concept_name = 'Labs - Culture Organisms'
	AND value_as_concept_id = 4149419                     			-- concept.concept_name = 'staph aureus coag +'
	AND measurement_concept_id = 46235217               			-- concept.concept_name = 'Bacteria identified in Blood product unit.autologous by Culture';
) staph ON id_is_staph = fact_id_1;
WHERE measurement_type_concept_id = 2000000008        			        -- concept.concept_name = 'Labs - Culture Sensitivity'
measurement_source_value value_as_concept_id concept_name
ERYTHROMYCIN 4148441 Resistant
ERYTHROMYCIN 4148441 Resistant
LEVOFLOXACIN 4148441 Resistant
OXACILLIN 4148441 Resistant
PENICILLIN 4148441 Resistant
PENICILLIN 4148441 Resistant
OXACILLIN 4038110 Susceptible
RIFAMPIN 4038110 Susceptible
TETRACYCLINE 4038110 Susceptible
VANCOMYCIN 4038110 Susceptible
CLINDAMYCIN 4038110 Susceptible
GENTAMICIN 4038110 Susceptible
GENTAMICIN 4038110 Susceptible
LEVOFLOXACIN 4038110 Susceptible

organism and antibiotic resistance

SELECT org.value_source_value, atb.measurement_source_value, resistance.concept_name
FROM
(
    SELECT fact_id_1, fact_id_2 from fact_relationship where fact_id_1 IN 
    (
        SELECT measurement_id 
        FROM measurement
        WHERE measurement_type_concept_id = 2000000007
        AND value_as_concept_id != 9189
    )
) as fact
JOIN measurement org ON org.measurement_id = fact.fact_id_1 and org.measurement_type_concept_id = 2000000007
JOIN measurement atb ON atb.measurement_id = fact.fact_id_2 and atb.measurement_type_concept_id = 2000000008
JOIN concept resistance ON resistance.concept_id = atb.value_as_concept_id
LIMIT 10;