Nia Mitchell

Positions:

Assistant Professor of Medicine

Medicine, General Internal Medicine
School of Medicine

Member of the Duke Cancer Institute

Duke Cancer Institute
School of Medicine

Education:

M.D. 2005

Washington University School of Medicine

M.P.H. 2010

University of Colorado School of Medicine

Internal Medicine Residency

University of Colorado School of Medicine

Primary Care Research Fellowship

University of Colorado School of Medicine

Grants:

Changes in Weight and Physical Function for Older African American Women in National, Peer-Led, Community-Based Weight Loss Program

Administered By
Medicine, General Internal Medicine
Awarded By
National Institutes of Health
Role
Principal Investigator
Start Date
End Date

Evaluation of Low Cost National Weight Loss Program in Underserved

Administered By
Medicine, General Internal Medicine
Awarded By
National Institutes of Health
Role
Principal Investigator
Start Date
End Date

Changes in Weight and Physical Function for Older African American Women in National, Peer-Led, Community-Based Weight Loss Program

Administered By
Medicine, General Internal Medicine
Awarded By
National Institutes of Health
Role
Principal Investigator
Start Date
End Date

Changes in Weight and Physical Function for Older African American Women in National, Peer-Led, Community-Based Weight Loss Program

Administered By
Medicine, General Internal Medicine
Awarded By
National Institutes of Health
Role
Principal Investigator
Start Date
End Date

Publications:

Continuous Engagement in a Weight-Loss Program Promotes Sustained Significant Weight Loss.

BACKGROUND: Significant weight loss improves health but regain is common. OBJECTIVE: The objective of the study was to determine if 2,346 members of Take Off Pounds Sensibly-a national, low-cost, peer-led weight-loss program-achieved and maintained significant weight loss with 7 consecutive annual renewals. METHODS: This study was a retrospective cohort design. For each renewal, the cumulative change from baseline weight was calculated. Weight change was placed into 1 of 3 categories: significant weight loss, loss ≥ 5%; weight stable, loss of 0 to < 5%; or weight gain, any amount above baseline weight. RESULTS: The cohort included 2,346 individuals. Fifty-one percent (n=740) of participants were in the significant weight-loss category all 7 years; 256 (18%) were in the significant weight-loss category at year 1 but moved into at least 1 other category during years 2 through 6; 359 (25%) were in the weight stable category at year 1; and 98 (7%) were in the weight gain category at year 1. CONCLUSIONS: Over 60% of the population achieved significant weight loss by year 7. Since continuous, long-term engagement in a weight-loss program can lead to significant weight loss, even if significant weight loss is not initially achieved, participation should be encouraged.
Authors
Mitchell, NS; Seyoum, EA; Bhavsar, NA; Webb, FJ
MLA Citation
Mitchell, Nia S., et al. “Continuous Engagement in a Weight-Loss Program Promotes Sustained Significant Weight Loss.Wmj, vol. 119, no. 4, Dec. 2020, pp. 253–57.
URI
https://scholars.duke.edu/individual/pub1471248
PMID
33428835
Source
pubmed
Published In
Wmj
Volume
119
Published Date
Start Page
253
End Page
257

The degree of engagement of overweight/obese adult women in the recommended activities of the Chilean "Vida Sana" program is directly correlated with its effectiveness.

INTRODUCTION: the Chilean Ministry of Health has implemented the Vida Sana (VS) program with the objective of reducing risk factors for chronic diseases in overweight/obese (OW/OB) individuals, aged 2-64. OBJECTIVE: to determine the effectiveness of VS in OW/OB women (20-44 yrs) in terms of their engagement in the recommended activities. These consist of participating in a minimum number of three core activities (psychologist consultations, lifestyle workshops, and physical activity sessions) during 6 months, to obtain a 5 % weight loss and improved physical fitness (PF). METHODS: a retrospective study involving secondary analyses of the 2017 VS database (N = 5,179 OW/OB women). We determined effectiveness by: a) comparing changes in weight and PF in participants who achieved one or both outcomes, using t-tests and tests of proportions, and b) assessing the probability of achieving the program´s goal, according to participation in 1, 2, or 3 core activities, individually and jointly, using the OR (95 % CI) and trend analysis. RESULTS: around 32 %, 88 %, and 29 % of women achieved 5 % weight loss, improved PF, or both, respectively. The high percentage of women who improved PF was due to a permissive criterion. Although 20 % of women attained the program´s goal with 0 engagement, among participants, the ORs (95 % CI) for achieving the program´s goal when engaging in 1, 2, or 3 core activities were 1.55 (CI 1.2-2.03), 2.34 (1.76-3.11), and 3.5 (2.21-5.53), respectively. CONCLUSION: effectiveness parallels degree of engagement in the recommended activities of VS. A characterization of a program´s participation rate is crucial for improving its effectiveness.
Authors
Mellado Peña, F; Mitchell, NS; Leyton Dinamarca, B; Kain Berkovic, J
URI
https://scholars.duke.edu/individual/pub1476064
PMID
33703910
Source
pubmed
Published In
Nutr Hosp
Published Date
DOI
10.20960/nh.03461

Effect of a Scoring Rubric on the Review of Scientific Meeting Abstracts.

Authors
Mitchell, NS; Stolzmann, K; Benning, LV; Wormwood, JB; Linsky, AM
MLA Citation
Mitchell, Nia S., et al. “Effect of a Scoring Rubric on the Review of Scientific Meeting Abstracts.J Gen Intern Med, Aug. 2020. Pubmed, doi:10.1007/s11606-020-05960-6.
URI
https://scholars.duke.edu/individual/pub1453768
PMID
32748347
Source
pubmed
Published In
J Gen Intern Med
Published Date
DOI
10.1007/s11606-020-05960-6

Ketogenic Diet for Obesity and Diabetes.

Authors
Yancy, WS; Mitchell, NS; Westman, EC
MLA Citation
Yancy, William S., et al. “Ketogenic Diet for Obesity and Diabetes.Jama Intern Med, vol. 179, no. 12, Dec. 2019, pp. 1734–35. Pubmed, doi:10.1001/jamainternmed.2019.5148.
URI
https://scholars.duke.edu/individual/pub1423329
PMID
31790530
Source
pubmed
Published In
Jama Internal Medicine
Volume
179
Published Date
Start Page
1734
End Page
1735
DOI
10.1001/jamainternmed.2019.5148

“Can we talk about your weight for a few minutes, Mr. Jones?”

Authors
Tsai, AG; Mitchell, N
MLA Citation
Tsai, A. G., and N. Mitchell. ““Can we talk about your weight for a few minutes, Mr. Jones?”.” Virtual Mentor, vol. 12, no. 4, Jan. 2010, pp. 299–304. Scopus, doi:10.1001/virtualmentor.2010.12.4.cprl2-1004.
URI
https://scholars.duke.edu/individual/pub1386047
Source
scopus
Published In
The Virtual Mentor : Vm
Volume
12
Published Date
Start Page
299
End Page
304
DOI
10.1001/virtualmentor.2010.12.4.cprl2-1004