Mexican Health and Aging Study

(MHAS)

www.MHASweb.org

Rebeca Wong, PhD

Principal Investigator

University of Texas Medical Branch

rewong@utmb.edu

1

Outline

Why study aging of Mexico?

How did we start, and how to collaborate?

Overview: Mexican Health and Aging Study (MHAS)

MHAS in the global study of aging

2

Significance of the Study of

Mexico Aging

• Informs the US Hispanic paradox

• Rapid aging, with chronic and infectious

diseases

3

Uniqueness of Aging in Mexico

• With low social and economic development

• Current elderly survived high levels of infectious diseases

• Chronic diseases are a growing problem yet infectious diseases are still prominent

• Mixed regime of diseases implies: compared with developed countries, healthy aging may be more difficult to achieve

4

Prospective Longitudinal Study of

Aging in Mexico

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Collaborators

6

Funded by the National Institutes of Health (NIA/NIH Grant # R01 AG018016)

MHAS Covers:

• Sociodemographic characteristics • Economic data

• Health – multiple dimensions • Work history and current

employment

• Family and social networks • Dwelling characteristics

• Migration experiences • Attitudes about health,

economic status

• Help given/received • Widowhood and last year of life

MHAS Comparable to HRS

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Communities with MHAS

Households

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Community with

households in the sample

Over-Sample in States with High

Migration to the United States

9 Over-sample 1.7:1 ; MHAS 2001

MHAS 2012

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MHAS Waves Timeline

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2001 2012 2003 2015

Planned

Sample: Born in 1951 or earlier New sample: Born 1952-1962:

n=5,896

15,186 Individuals

546 Deceased

2,742 Deceased (Accumulated=3,288)

Household

interviews

Wave 1 Wave 2 Wave 3 Wave 4

MHAS 2012 Actual Counts

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6,259

Selected

NEW

INDIVIDUALS

385

NEW SPOUSES

of follow-up

INDIVIDUALS

14,283

Eligible

INDIVIDUALS

88.1 %

Response Rate

DIRECT

INTERVIEWS

14,448

PROXY

INTERVIEWS

1,275

NEXT-OF-KIN

INTERVIEWS

2,742

18,465

Interviewed

INDIVIDUALS

FOLLOW-UP

SAMPLE

Migration of MHAS Respondents’

Adult Children, 2001 and 2012

79% 71%

83%

68%

21% 29%

17%

32%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Currently in US Ever in US Currently in US Ever in US

MHAS-1 (2001) MHAS-3 (2012)

Adult

Living

Children

1+

None

1+

None

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Transitions in ADL Limitations over Two

Years, Aged 60 or more in 2001

82%

59.7%

29.9%

6.60%

18.9%

17.4%

2.00%

8.8%

19.9%

4.40% 9.60%

27.8%

5.00% 3.00% 5.00%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0 1-2 3+

ADL Limitations, 2001 Bathing, eating, going to bed, using the restroom and dressing

LTF

Dead

3+

1-2

0

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ADL

Limitations

2003

Diaz-Venegas C., et al. (2013)

Transitions in ADL Limitations over 11

Years, Aged 60 or more in 2001

15

42.8%

20.6% 9.4%

11.1%

14.2%

11.1%

3.4%

6.9%

6.4%

31.5% 49.4%

60.8%

11.3% 8.9% 12.3%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0 1-2 3+

ADL Limitations, 2001 Bathing, eating, going to bed, using the restroom and dressing

LTF

Dead

3+

1-2

0

ADL

Limitations

2012

Diaz-Venegas C., et al. (2013)

Health Insurance Coverage

Increased between 2001 and 2012

16

34.1

32.5

13.7

11.7

3.2

2.5

2.3

33.5

31.3

16.9

10.6

3.7

1.8

2.3

0% 10% 20% 30% 40% 50%

Age 50 or more in 2012

Men Women

Other

Pemex, Defense,

Marine

Private medical

insurance

Seguro Popular

Social Insurance

(IMSS)

ISSSTE/ISSSTE

State

None

Increase in Health Insurance was

Higher in Rural Areas

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71.5

19.9

2.6 6.0

39.1

46.4

1.9

12.6

0%

10%

20%

30%

40%

50%

60%

70%

80%

Rural

Age 50 or more in 2001

Urban = 100 000 inhabitants or more

Rural = Less than 100 000 inhabitants

With health

insurance in 2001

and 2012

Without health

insurance in 2001, with

health insurance in

2012 Urban

With health insurance in

2001, without health

insurance in 2012

Without health

insurance in

2001 and 2012

Dissemination of MHAS

• Data available at website:

In English: www.MHASweb.org

In Spanish: www.ENASEM.com

• Discussion Forum for data users

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MHAS in Global Aging

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ELSA 2002

MHAS 2001

HRS 1992

CHARLS 2011

IFLS 2007

JSTAR 2007

KLoSA 2006

LASI 2012

TILDA 2010

SHARE 2004

PREHCO 2002

ELSI 2014

Planned

CRELES 2005

Cross-Country Harmonization

Survey Meta Data:

Harmonization of different datasets: HRS and several studies in other countries

https://mmicdata.rand.org/megadata/

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