Table 1.
Construct* | Conceptual Definition | Operational Definition | Source |
---|---|---|---|
Outcomes | |||
| |||
BMI | Weight, controlling for height | weight (kg)/[height (m)]2, based on measured height and weight | CDW |
Metabolic Risk (WAVES I) | Blood pressure Serum glucose Serum lipids |
Systolic and diastolic blood pressures Serum glucose Total, HDL and LDL cholesterol |
CDW |
MOVE! Engagement/Participation (WAVES II) | Duration and/or intensity of MOVE! program participation | 2 or more visits (yes/no) MOVE! visit count “Intense and Sustained” participation as defined by MOVE! (8 or more visits in 6 months taking place over at least 4 months) |
NPCD |
| |||
Covariates | |||
| |||
Demographics | Age | Age: in years | NPCD |
Gender/sex | Self-reported gender or sex | NPCD | |
Race/ethnicity | Self-reported race and ethnicity | NPCD | |
Marital status | Marital status | NPCD | |
Socioeconomic status | Military rank at discharge (DoD) AFQT aptitude test score (percentile), taken at military recruitment |
DoD | |
Clinical Factors | Health status/comorbidity burden | Modified Deyo-Charlson Comorbidity Score, based on ICD-9 and CPT procedure codes, or similar comorbidity index | NPCD, Medicare claims |
Health events impacting diet, physical activity, or weight | Surgical procedures, based on Decision Support System (DSS) Identifiers (clinic stop codes), CPT, and ICD-9 procedure codes | NPCD, Medicare claims | |
Medications known to influence appetite, weight | Weight loss medications (e.g., orlistat) Other medications known to influence appetite and/or weight (e.g., insulin, anti-psychotics antidepressants, oral diabetes drugs) |
DSS Pharmacy Data, Medicare Part D event data | |
Healthcare Utilization | Inpatient stays and outpatient encounters | Count of inpatient days Count of outpatient primary and specialty care provider encounters |
NPCD, Medicare claims |
MOVE! Program Participation (WAVES I) | Intensity, duration, and components of MOVE! program participation | MOVE! encounters (e.g., count, yes/no) MOVE! encounter type(s)—individual in-person, individual phone, group |
NPCD (DSS identifiers) |
Veteran’s VA Facility | VA facility where veteran received the majority of his/her care | VA facility identifier | NPCD |
Abbreviations: ADR: Administrative Data Repository; AFQT: Armed Forces Qualifying Test; ASVAB: Armed Services Vocational Aptitude Battery; BMI: Body Mass Index; CDW: VA Corporate Data Warehouse; DoD: Department of Defense; DSS: VHA Decision Support System; NPCD: National Patient Care Database; NPPD: National Prosthetics Patient Database; PSSG: Planning Systems Support Group; VBA: Veterans Benefits Administration; VSF: VHA Vital Status File; VADIR: VA/DOD Identity Repository
Constructs apply to both WAVES I and II unless otherwise specified.