ID

10085

Description

S0502 Off Treatment Notice S0502 Imatinib Mesylate With or Without Bevacizumab in Treating Patients With Metastatic or Unresectable Gastrointestinal Stromal Tumor NCT00324987 Source Form: NCI FormBuilder: https://formbuilder.nci.nih.gov/FormBuilder/formDetailsAction.do?method=getFormDetails&formIdSeq=FCCFD537-4859-4344-E034-0003BA3F9857

Link

https://formbuilder.nci.nih.gov/FormBuilder/formDetailsAction.do?method=getFormDetails&formIdSeq=FCCFD537-4859-4344-E034-0003BA3F9857

Keywords

  1. 9/19/12 9/19/12 -
  2. 1/8/15 1/8/15 - Martin Dugas
  3. 3/24/15 3/24/15 - Martin Dugas
Uploaded on

March 24, 2015

DOI

To request one please log in.

License

Creative Commons BY-NC 3.0 Legacy

Model comments :

You can comment on the data model here. Via the speech bubbles at the itemgroups and items you can add comments to those specificially.

Itemgroup comments for :

Item comments for :

In order to download data models you must be logged in. Please log in or register for free.

Gastrointestinal Stromal Tumor NCT00324987

No Instruction available.

  1. StudyEvent: S0502 Off Treatment Notice
    1. No Instruction available.
Header
Description

Header

Alias
UMLS CUI-1
C1320722
SWOG Patient ID
Description

Trial subject ID SWOG

Data type

text

Alias
NCI Thesaurus ValueDomain
C25337
UMLS CUI-1
C2348585
NCI Thesaurus ObjectClass
C16960
UMLS CUI-2
C1519429
NCI Thesaurus Property
C25364
NCI Thesaurus Property-2
C25699
SWOG Study No.
Description

Protocol ID SWOG

Data type

text

Alias
NCI Thesaurus ValueDomain
C25337
UMLS CUI-1
C3274381
NCI Thesaurus ObjectClass
C25320
UMLS CUI-2
C1519429
NCI Thesaurus Property
C25364
NCI Thesaurus Property-2
C25699
Registration Step
Description

Registration Number

Data type

text

Alias
NCI Thesaurus ValueDomain
C25337
UMLS CUI-1
C1514821
NCI Thesaurus ObjectClass
C25646
UMLS CUI-2
C0237753
NCI Thesaurus Property
C16154
NCI Thesaurus ValueDomain-2
C16154
Patient Initials (L, F M)
Description

Patient Initials

Data type

text

Alias
NCI Thesaurus ValueDomain
C25191
UMLS CUI-1
C2986440
NCI Thesaurus ObjectClass
C16960
NCI Thesaurus Property
C25536
Institution/Affiliate
Description

Institution Name

Data type

text

Alias
NCI Thesaurus ObjectClass
C25454
UMLS CUI-1
C1301943
NCI Thesaurus ObjectClass-2
C21541
NCI Thesaurus Property
C25364
NCI Thesaurus ValueDomain
C25191
NCI Thesaurus ValueDomain-2
C21541
Physician
Description

Investigator Name

Data type

text

Alias
NCI Thesaurus ValueDomain
C25191
UMLS CUI-1
C2826892
NCI Thesaurus Property
C25364
NCI Thesaurus ObjectClass
C17089
NCI Thesaurus ObjectClass-2
C25644
Participating Group Name
Description

Participating Group

Data type

text

Alias
NCI Thesaurus ValueDomain
C25191
UMLS CUI-1
C2347449
NCI Thesaurus ObjectClass
C25608
NCI Thesaurus ObjectClass-2
C17005
NCI Thesaurus Property
C25364
Participating Group Study No.
Description

Study Number Participating Group

Data type

text

Alias
NCI Thesaurus ValueDomain
C25337
UMLS CUI-1
C3274381
NCI Thesaurus ObjectClass
C25320
UMLS CUI-2
C2347449
NCI Thesaurus Property
C25608
NCI Thesaurus Property-2
C25364
Participating Group Patient ID
Description

Trial subject ID Participating Group

Data type

text

Alias
NCI Thesaurus ValueDomain
C25337
UMLS CUI-1
C2348585
NCI Thesaurus ObjectClass
C16960
UMLS CUI-2
C2347449
NCI Thesaurus Property
C25608
NCI Thesaurus Property-2
C25364
Comments
Description

Research Comments

Data type

text

Alias
NCI Thesaurus ValueDomain
C25704
UMLS CUI-1
C0947611
NCI Thesaurus ObjectClass
C15319
NCI Thesaurus Property
C25393
Off Treatment
Description

Off Treatment

Alias
UMLS CUI-1
C1518544
Treatment Start Date
Description

Treatment Begin Date

Data type

date

Alias
NCI Thesaurus ObjectClass
C15368
NCI Thesaurus Property
C25431
UMLS CUI-1
C3173309
NCI Thesaurus Property-2
C25275
NCI Thesaurus ValueDomain
C25164
NCI Thesaurus ValueDomain-2
C25431
Treatment End Date
Description

Treatment End Date

Data type

date

Alias
NCI Thesaurus ValueDomain
C25164
UMLS CUI-1
C1531784
NCI Thesaurus ObjectClass
C15368
NCI Thesaurus Property
C25275
NCI Thesaurus Property-2
C25496
Regimen or Procedure or Site (s)
Description

ProcedureLocationText

Data type

text

Alias
NCI Thesaurus ValueDomain
C25704
UMLS 2011AA ValueDomain
C1527021
NCI Thesaurus Property
C25341
UMLS 2011AA Property
C0450429
NCI Thesaurus ObjectClass
C25218
UMLS 2011AA ObjectClass
C1948041
Off Treatment Reason (select one:)
Description

Off Treatment Reason (select one:)

Data type

text

Alias
NCI Thesaurus ValueDomain
C25638
NCI Thesaurus ObjectClass
C25601
NCI Thesaurus Property
C25365
UMLS CUI-1
C1518544
UMLS CUI-2
C0566251
Specify
Description

Off-TreatmentAdverseEventReasonSpecify

Data type

text

Alias
NCI Thesaurus ValueDomain
C25685
UMLS 2011AA ValueDomain
C1521902
NCI Thesaurus Property
C25638
UMLS 2011AA Property
C0392360
NCI Thesaurus Property-2
C41331
UMLS 2011AA Property-2
C0877248
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
Patient withdrawal/refusal after beginning protocol therapy specify
Description

PatientBeginProtocolTherapyRefuseSpecify

Data type

text

Alias
NCI Thesaurus ObjectClass
C16960
NCI Thesaurus Property
C25320
NCI Thesaurus Property-2
C49161
NCI Thesaurus Property-3
C15368
NCI Thesaurus Property-4
C25431
NCI Thesaurus ValueDomain
C25685
UMLS CUI-1
C0422727
UMLS CUI-2
C1548614
UMLS CUI-3
C0677104
Patient withdrawal/refusal prior to beginning protocol therapy specify
Description

PatientPriorProtocolTherapyRefuseSpecify

Data type

text

Alias
NCI Thesaurus ObjectClass
C16960
NCI Thesaurus Property
C25320
NCI Thesaurus Property-2
C49161
NCI Thesaurus Property-3
C25629
NCI Thesaurus Property-4
C15368
NCI Thesaurus ValueDomain
C25685
UMLS CUI-1
C0422727
UMLS CUI-2
C1548606
UMLS CUI-3
C0677104
Sites
Description

Off-TreatmentDiseaseProgressionAnatomicSiteSpecify

Data type

text

Alias
NCI Thesaurus ValueDomain
C25685
UMLS 2011AA ValueDomain
C1521902
NCI Thesaurus Property
C13717
UMLS 2011AA Property
C1515974
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
NCI Thesaurus ObjectClass-2
C17747
UMLS 2011AA ObjectClass-2
C0242656
Other specify
Description

Off Treatment Reason, specify

Data type

text

Alias
NCI Thesaurus ValueDomain
C25685
UMLS CUI-1
C1518544
NCI Thesaurus ObjectClass
C25601
UMLS CUI-2
C0566251
NCI Thesaurus Property
C25365
UMLS CUI-3
C1521902
Was treatment termination medically required (For any adverse event,)
Description

Off-TreatmentMedicalReasonInd-2

Data type

boolean

Alias
NCI Thesaurus ValueDomain
C38147
UMLS 2011AA ValueDomain
C1512698
NCI Thesaurus Property
C25638
UMLS 2011AA Property
C0392360
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
NCI Thesaurus Property-2
C25261
UMLS 2011AA Property-2
C0205476
Yes specify
Description

Off-TreatmentMedicalReasonSpecify

Data type

text

Alias
NCI Thesaurus ValueDomain
C25685
UMLS 2011AA ValueDomain
C1521902
NCI Thesaurus Property
C25638
UMLS 2011AA Property
C0392360
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
NCI Thesaurus Property-2
C25261
UMLS 2011AA Property-2
C0205476
Was reason due to adverse event/side effects/complications (For any patient refusal,)
Description

Off-TreatmentAdverseEventReasonInd-2

Data type

boolean

Alias
NCI Thesaurus ValueDomain
C38147
UMLS 2011AA ValueDomain
C1512698
NCI Thesaurus Property
C25638
UMLS 2011AA Property
C0392360
NCI Thesaurus Property-2
C41331
UMLS 2011AA Property-2
C0877248
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
Specify other reason for refusal
Description

Off-TreatmentPatientReasonSpecify

Data type

text

Alias
NCI Thesaurus ValueDomain
C25685
UMLS 2011AA ValueDomain
C1521902
NCI Thesaurus Property
C25638
UMLS 2011AA Property
C0392360
NCI Thesaurus Property-2
C16960
UMLS 2011AA Property-2
C0030705
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
Off Treatment Date (Date of completion, progression, death or decision to discontinue therapy:)
Description

OffTreatmentDate

Data type

date

Alias
NCI Thesaurus ValueDomain
C25164
UMLS 2011AA ValueDomain
C0011008
NCI Thesaurus ObjectClass
C25601
UMLS 2011AA ObjectClass
C1518544
NCI Thesaurus Property
C25275
UMLS 2011AA Property
C2745955
Will patient receive further treatment?
Description

FurtherTreatmentAdministeredInd-3

Data type

text

Alias
NCI Thesaurus ValueDomain
C38148
UMLS 2011AA ValueDomain
C1512699
NCI Thesaurus ObjectClass
C15368
NCI Thesaurus ObjectClass-2
C25519
UMLS 2011AA ObjectClass
C1517331
NCI Thesaurus Property
C25382
UMLS 2011AA Property
C1521801
Yes, specify
Description

FurtherTreatmentSpecify

Data type

text

Alias
NCI Thesaurus ValueDomain
C25685
UMLS 2011AA ValueDomain
C1521902
NCI Thesaurus ObjectClass
C15368
NCI Thesaurus ObjectClass-2
C25519
UMLS 2011AA ObjectClass
C1517331
NCI Thesaurus Property
C25382
UMLS 2011AA Property
C1521801
Date of Last Contact or Death
Description

Date last contact

Data type

date

Alias
NCI Thesaurus ObjectClass
C16960
UMLS CUI-1
C0805839
NCI Thesaurus Property
C25461
NCI Thesaurus Property-2
C25551
NCI Thesaurus ValueDomain
C25164
NCI Thesaurus ValueDomain-2
C25367
Vital Status
Description

Patient Status

Data type

text

Alias
NCI Thesaurus ObjectClass
C16960
UMLS CUI-1
C3846084
NCI Thesaurus ValueDomain
C18003
NCI Thesaurus ValueDomain-2
C25688
NCI Thesaurus Property
C25717

Similar models

No Instruction available.

  1. StudyEvent: S0502 Off Treatment Notice
    1. No Instruction available.
Name
Type
Description | Question | Decode (Coded Value)
Data type
Alias
Item Group
Header
C1320722 (UMLS CUI-1)
Trial subject ID SWOG
Item
SWOG Patient ID
text
C25337 (NCI Thesaurus ValueDomain)
C2348585 (UMLS CUI-1)
C16960 (NCI Thesaurus ObjectClass)
C1519429 (UMLS CUI-2)
C25364 (NCI Thesaurus Property)
C25699 (NCI Thesaurus Property-2)
Protocol ID SWOG
Item
SWOG Study No.
text
C25337 (NCI Thesaurus ValueDomain)
C3274381 (UMLS CUI-1)
C25320 (NCI Thesaurus ObjectClass)
C1519429 (UMLS CUI-2)
C25364 (NCI Thesaurus Property)
C25699 (NCI Thesaurus Property-2)
Registration Number
Item
Registration Step
text
C25337 (NCI Thesaurus ValueDomain)
C1514821 (UMLS CUI-1)
C25646 (NCI Thesaurus ObjectClass)
C0237753 (UMLS CUI-2)
C16154 (NCI Thesaurus Property)
C16154 (NCI Thesaurus ValueDomain-2)
Patient Initials
Item
Patient Initials (L, F M)
text
C25191 (NCI Thesaurus ValueDomain)
C2986440 (UMLS CUI-1)
C16960 (NCI Thesaurus ObjectClass)
C25536 (NCI Thesaurus Property)
Institution Name
Item
Institution/Affiliate
text
C25454 (NCI Thesaurus ObjectClass)
C1301943 (UMLS CUI-1)
C21541 (NCI Thesaurus ObjectClass-2)
C25364 (NCI Thesaurus Property)
C25191 (NCI Thesaurus ValueDomain)
C21541 (NCI Thesaurus ValueDomain-2)
Investigator Name
Item
Physician
text
C25191 (NCI Thesaurus ValueDomain)
C2826892 (UMLS CUI-1)
C25364 (NCI Thesaurus Property)
C17089 (NCI Thesaurus ObjectClass)
C25644 (NCI Thesaurus ObjectClass-2)
Participating Group
Item
Participating Group Name
text
C25191 (NCI Thesaurus ValueDomain)
C2347449 (UMLS CUI-1)
C25608 (NCI Thesaurus ObjectClass)
C17005 (NCI Thesaurus ObjectClass-2)
C25364 (NCI Thesaurus Property)
Study Number Participating Group
Item
Participating Group Study No.
text
C25337 (NCI Thesaurus ValueDomain)
C3274381 (UMLS CUI-1)
C25320 (NCI Thesaurus ObjectClass)
C2347449 (UMLS CUI-2)
C25608 (NCI Thesaurus Property)
C25364 (NCI Thesaurus Property-2)
Trial subject ID Participating Group
Item
Participating Group Patient ID
text
C25337 (NCI Thesaurus ValueDomain)
C2348585 (UMLS CUI-1)
C16960 (NCI Thesaurus ObjectClass)
C2347449 (UMLS CUI-2)
C25608 (NCI Thesaurus Property)
C25364 (NCI Thesaurus Property-2)
Research Comments
Item
Comments
text
C25704 (NCI Thesaurus ValueDomain)
C0947611 (UMLS CUI-1)
C15319 (NCI Thesaurus ObjectClass)
C25393 (NCI Thesaurus Property)
Item Group
Off Treatment
C1518544 (UMLS CUI-1)
Treatment Begin Date
Item
Treatment Start Date
date
C15368 (NCI Thesaurus ObjectClass)
C25431 (NCI Thesaurus Property)
C3173309 (UMLS CUI-1)
C25275 (NCI Thesaurus Property-2)
C25164 (NCI Thesaurus ValueDomain)
C25431 (NCI Thesaurus ValueDomain-2)
Treatment End Date
Item
Treatment End Date
date
C25164 (NCI Thesaurus ValueDomain)
C1531784 (UMLS CUI-1)
C15368 (NCI Thesaurus ObjectClass)
C25275 (NCI Thesaurus Property)
C25496 (NCI Thesaurus Property-2)
ProcedureLocationText
Item
Regimen or Procedure or Site (s)
text
C25704 (NCI Thesaurus ValueDomain)
C1527021 (UMLS 2011AA ValueDomain)
C25341 (NCI Thesaurus Property)
C0450429 (UMLS 2011AA Property)
C25218 (NCI Thesaurus ObjectClass)
C1948041 (UMLS 2011AA ObjectClass)
Item
Off Treatment Reason (select one:)
text
C25638 (NCI Thesaurus ValueDomain)
C25601 (NCI Thesaurus ObjectClass)
C25365 (NCI Thesaurus Property)
C1518544 (UMLS CUI-1)
C0566251 (UMLS CUI-2)
Code List
Off Treatment Reason (select one:)
CL Item
Treatment Completed Per Protocol Criteria (1)
C0580352 (UMLS CUI-1)
CL Item
Adverse Event/side Effects/complications (2)
C0877248 (UMLS CUI-1)
CL Item
Patient Withdrawal Or Refusal After Beginning Protocol Therapy (3)
C0422727 (UMLS CUI-1)
C1548614 (UMLS CUI-2)
C0677104 (UMLS CUI-3)
CL Item
Patient Withdrawal Or Refusal Before Beginning Protocol Therapy (4)
C0422727 (UMLS CUI-1)
C1548606 (UMLS CUI-2)
C0677104 (UMLS CUI-3)
CL Item
Disease Progression, Relapse During Active Treatment (5)
C0242656 (UMLS CUI-1)
CL Item
Death On Study (6)
C0011065 (UMLS CUI-1)
C2349977 (UMLS CUI-2)
CL Item
Other (7)
C0205394 (UMLS CUI-1)
Off-TreatmentAdverseEventReasonSpecify
Item
Specify
text
C25685 (NCI Thesaurus ValueDomain)
C1521902 (UMLS 2011AA ValueDomain)
C25638 (NCI Thesaurus Property)
C0392360 (UMLS 2011AA Property)
C41331 (NCI Thesaurus Property-2)
C0877248 (UMLS 2011AA Property-2)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
Patient withdrawal/refusal after beginning protocol therapy specify
Item
Patient withdrawal/refusal after beginning protocol therapy specify
text
C16960 (NCI Thesaurus ObjectClass)
C25320 (NCI Thesaurus Property)
C49161 (NCI Thesaurus Property-2)
C15368 (NCI Thesaurus Property-3)
C25431 (NCI Thesaurus Property-4)
C25685 (NCI Thesaurus ValueDomain)
C0422727 (UMLS CUI-1)
C1548614 (UMLS CUI-2)
C0677104 (UMLS CUI-3)
Patient withdrawal/refusal prior to beginning protocol therapy specify
Item
Patient withdrawal/refusal prior to beginning protocol therapy specify
text
C16960 (NCI Thesaurus ObjectClass)
C25320 (NCI Thesaurus Property)
C49161 (NCI Thesaurus Property-2)
C25629 (NCI Thesaurus Property-3)
C15368 (NCI Thesaurus Property-4)
C25685 (NCI Thesaurus ValueDomain)
C0422727 (UMLS CUI-1)
C1548606 (UMLS CUI-2)
C0677104 (UMLS CUI-3)
Off-TreatmentDiseaseProgressionAnatomicSiteSpecify
Item
Sites
text
C25685 (NCI Thesaurus ValueDomain)
C1521902 (UMLS 2011AA ValueDomain)
C13717 (NCI Thesaurus Property)
C1515974 (UMLS 2011AA Property)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
C17747 (NCI Thesaurus ObjectClass-2)
C0242656 (UMLS 2011AA ObjectClass-2)
Off Treatment Reason, specify
Item
Other specify
text
C25685 (NCI Thesaurus ValueDomain)
C1518544 (UMLS CUI-1)
C25601 (NCI Thesaurus ObjectClass)
C0566251 (UMLS CUI-2)
C25365 (NCI Thesaurus Property)
C1521902 (UMLS CUI-3)
Off-TreatmentMedicalReasonInd-2
Item
Was treatment termination medically required (For any adverse event,)
boolean
C38147 (NCI Thesaurus ValueDomain)
C1512698 (UMLS 2011AA ValueDomain)
C25638 (NCI Thesaurus Property)
C0392360 (UMLS 2011AA Property)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
C25261 (NCI Thesaurus Property-2)
C0205476 (UMLS 2011AA Property-2)
Off-TreatmentMedicalReasonSpecify
Item
Yes specify
text
C25685 (NCI Thesaurus ValueDomain)
C1521902 (UMLS 2011AA ValueDomain)
C25638 (NCI Thesaurus Property)
C0392360 (UMLS 2011AA Property)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
C25261 (NCI Thesaurus Property-2)
C0205476 (UMLS 2011AA Property-2)
Off-TreatmentAdverseEventReasonInd-2
Item
Was reason due to adverse event/side effects/complications (For any patient refusal,)
boolean
C38147 (NCI Thesaurus ValueDomain)
C1512698 (UMLS 2011AA ValueDomain)
C25638 (NCI Thesaurus Property)
C0392360 (UMLS 2011AA Property)
C41331 (NCI Thesaurus Property-2)
C0877248 (UMLS 2011AA Property-2)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
Off-TreatmentPatientReasonSpecify
Item
Specify other reason for refusal
text
C25685 (NCI Thesaurus ValueDomain)
C1521902 (UMLS 2011AA ValueDomain)
C25638 (NCI Thesaurus Property)
C0392360 (UMLS 2011AA Property)
C16960 (NCI Thesaurus Property-2)
C0030705 (UMLS 2011AA Property-2)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
OffTreatmentDate
Item
Off Treatment Date (Date of completion, progression, death or decision to discontinue therapy:)
date
C25164 (NCI Thesaurus ValueDomain)
C0011008 (UMLS 2011AA ValueDomain)
C25601 (NCI Thesaurus ObjectClass)
C1518544 (UMLS 2011AA ObjectClass)
C25275 (NCI Thesaurus Property)
C2745955 (UMLS 2011AA Property)
Item
Will patient receive further treatment?
text
C38148 (NCI Thesaurus ValueDomain)
C1512699 (UMLS 2011AA ValueDomain)
C15368 (NCI Thesaurus ObjectClass)
C25519 (NCI Thesaurus ObjectClass-2)
C1517331 (UMLS 2011AA ObjectClass)
C25382 (NCI Thesaurus Property)
C1521801 (UMLS 2011AA Property)
Code List
Will patient receive further treatment?
CL Item
No (No)
C49487 (NCI Thesaurus)
C1298908 (UMLS 2011AA)
CL Item
Yes (Yes)
C49488 (NCI Thesaurus)
C1705108 (UMLS 2011AA)
CL Item
Unknown (Unknown)
C17998 (NCI Thesaurus)
C0439673 (UMLS 2011AA)
FurtherTreatmentSpecify
Item
Yes, specify
text
C25685 (NCI Thesaurus ValueDomain)
C1521902 (UMLS 2011AA ValueDomain)
C15368 (NCI Thesaurus ObjectClass)
C25519 (NCI Thesaurus ObjectClass-2)
C1517331 (UMLS 2011AA ObjectClass)
C25382 (NCI Thesaurus Property)
C1521801 (UMLS 2011AA Property)
Date last contact
Item
Date of Last Contact or Death
date
C16960 (NCI Thesaurus ObjectClass)
C0805839 (UMLS CUI-1)
C25461 (NCI Thesaurus Property)
C25551 (NCI Thesaurus Property-2)
C25164 (NCI Thesaurus ValueDomain)
C25367 (NCI Thesaurus ValueDomain-2)
Item
Vital Status
text
C16960 (NCI Thesaurus ObjectClass)
C3846084 (UMLS CUI-1)
C18003 (NCI Thesaurus ValueDomain)
C25688 (NCI Thesaurus ValueDomain-2)
C25717 (NCI Thesaurus Property)
Code List
Vital Status
CL Item
Alive (Alive)
CL Item
Dead (Dead)

Please use this form for feedback, questions and suggestions for improvements.

Fields marked with * are required.

Do you need help on how to use the search function? Please watch the corresponding tutorial video for more details and learn how to use the search function most efficiently.

Watch Tutorial