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Fragile Families and Child Wellbeing Study Variable Naming Scheme.
| Source | Regular Expression | Interpretation | Examples |
|---|---|---|---|
| Questionnaire | ^[mfkpqthodersu][1–6][a–z][1–9]* | [instrument][wave number][survey section][question number] | k3a8 r3f9a |
| Constructed | ^c[mfkpqthodersu][1–6][a–z]* | constructed[instrument][wave number][leaf] | cf2age ch3ppvtstd |
| Weights | ^[mfkpq][1–5][nat|city]wt* | [instrument][wave number][national or city]weight | k5natwt_rep14 m1citynatwt |
| ID number | ^idnum$ | ID number | idnum |
