Thank you Elaine!


Cliff Cook


From: [] On Behalf Of
Sent: Tuesday, August 18, 2015 4:27 PM
Subject: Re: [CTPP] Question about Inclusion of Students in JTW Data


Persons in Group Quarters were included in the 1990 and 2000 decennial census long forms.

That is why it is important to understand the difference in “universes”:

   Total persons and Persons in Households.

Total persons INCLUDES people in group quarters.

Persons in Households EXCLUDES people in group quarters.


As a reminder, questions about vehicle availability is asked of HOUSEHOLDS, therefore only available to tabulate for households.

Means of transportation to work is asked of PERSONS.


Elaine Murakami

FHWA Office of Planning


From: [] On Behalf Of Geoffrey Chiapella
Sent: Monday, August 17, 2015 2:13 PM
To: ''
Subject: Re: [CTPP] Question about Inclusion of Students in JTW Data


Concur… dorms are non-institutional GQ.


Geoffrey Chiapella

Transportation Planner

San Luis Obispo Council of Governments

1114 Marsh Street

San Luis Obispo, CA 93401

(805) 781-5190


From: [] On Behalf Of Patricia Becker
Sent: Monday, August 17, 2015 2:04 PM
To: ctpp
Subject: Re: [CTPP] Question about Inclusion of Students in JTW Data


I don't think there's any question that dorms are non-institutional GQ.


On Mon, Aug 17, 2015 at 4:53 PM, Cook, Cliff <> wrote:

The code list for the ACS lists dormitories as non-institutional group quarters, unlike jails and nursing homes, for example, which are institutional.


Cliff Cook


From: [] On Behalf Of Tabatabaee, Frank
Sent: Monday, August 17, 2015 4:28 PM
Cc: Krause, Henry <>
Subject: Re: [CTPP] Question about Inclusion of Students in JTW Data


Are there any list/table of “institutional” GQs? This may help resolve this question. A broad definition of “institution” may be interpreted differently by different people.


Thank you,

S. Frank Tabatabaee
Systems Planning Office
Florida Department of Transportation

605 Suwannee Street, MS 19
Tallahassee, Florida 32399-0450
E-Mail/Respond to:
(850) 414-4931 Office
(850) 414-4876 Fax

(850) 414-4900 Switchboard


Be careful, arrive alive!




From: [] On Behalf Of Cook, Cliff
Sent: Monday, August 17, 2015 4:02 PM
Cc: Krause, Henry
Subject: [CTPP] Question about Inclusion of Students in JTW Data


A question has come as to whether employed students living in dormitories are included in the 2006-10 CTPP JTW tables.


Researching the question, I found the following on p. 66 of the 2013 ACS Subject Definitions document, under the definition of employed persons (


Beginning in 2006, the population in group quarters (GQ) is included in the ACS. Some types of GQ populations have employment status distributions that are different from the household population. All institutionalized people are placed in the “not in labor force category.” The inclusion of the GQ population could therefore have a noticeable impact on the employment status distribution. This is particularly true for areas with a substantial GQ population. For example, in areas having a large state prison population, the employment rate would be expected to decrease because the base of the percentage, which now includes the population in correctional institutions, is larger.


I interpret this to mean that dorm residents, as noninstitutionalized group quarters residents,  are included in CTPP statistics but want to confirm that my understanding is correct. 


My follow up question concerns the 1990 and 2000 JTW tables.  Were employed dormitory residents (ie, noninstitutionalized group quarters residents) included in those statistics? My recollection is that is not the case but I want to confirm that is correct.




Cliff Cook



Clifford Cook, Planning Information Manager
Cambridge Community Development Department
344 Broadway, Cambridge, MA. 02139

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Patricia C. (Patty) Becker
APB Associates/Southeast Michigan Census Council (SEMCC)
28300 Franklin Rd, Southfield, MI 48034
office: 248-354-6520