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Table 1 Data elements, measurement, and source

From: Predictors of well child care adherence over time in a cohort of urban Medicaid-eligible infants

Variable

Measure

Data source

Collected

OUTCOME

Adherence to WCC

Categorical: yes or no (from continuous count of visits)

EMR

Once, at end of study

PREDICTORS

   • CHILD

Insurance status

2 categories: insured or not

Survey1

Every 6 months

Insurance type

5 categories: Medicaid, CHIP, employer-sponsored, individually-purchased, or other

Survey1

Every 6 months

Health status

2 categories: fair/poor or good/very good/excellent (dichotomized from 5 categories)

Survey1

Every 6 months

   • MOTHER

Age

Continuous: years

Survey1

Initial

Race

6 categories: White; Black/African American; American Indian/Alaskan Native; Asian; Native Hawaiian/Other Pacific Islander; Some other race

Survey1

Initial

Educational status

2 categories: less than high school; high school/GED equivalent/more (dichotomized from 3 categories)

Survey1

Initial

Primipara

2 categories: primiparous or not

Survey1

Initial

Insurance status

2 categories: insured or not

Survey1

Initial & every 6 months

Maternal health literacy

2 categories: adequate or marginal/inadequate

(Based on continuous S-TOFHLA score, validated cutpoint at 23 (range 0-36))

Survey

Initial

Receiving any public assistance (WIC, food stamps, SSI)

Categorical: yes or no

Survey

Initial & every 6 months

Maternal health status

Continuous: numerical score from RAND Medical Outcome Study SF-36 subscales

Survey

Initial & every 6 months

Household composition

Categorical: father of baby lives at home or not; other adults live at home or not

Survey1

Initial & every 6 months

Maternal employment status

Two categories: full-time employed/student or part-time employed/unemployed looking/unemployed not looking for work

Dichotomized from 5 categories

Survey1

Initial & every 6 months

Average monthly household income

2 categories: ≤ $500/month or > $500/month

Dichotomized at closest value to median from 8 categories: < $250/month; $251 - $500/mo; $501 - $999/mo; $1,000 - $1,499/mo; $1,500 - $1,999/mo; $2,000 - $2,499/mo; $2,500 - $2,999/mo; $3,000 + /mo

Survey1

Initial & every 6 months

Maternal social support

Categorical: Maternal Social Support Index (range 0-27) classified as low; medium; or high support by tertiles

Survey

12, 18, and 24 month follow-up

  1. Survey: Data collected in-person or via telephone using survey instrument & questionnaire
  2. 1Items adapted from the National Health Interview Survey