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Technical Appendix to NCHRP Report 571: Standardized Procedures for Personal Travel Surveys (2007) / Chapter Skim
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... i Contents 1.
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... ii 5.6.2 Review and Analysis of Unit Non-Response..............................................................................................83 5.6.3 Non-Response Follow-Up Study. ..............................................................................................................91 5.7 D-10: INITIAL CONTACTS ................................................................................................................................111 5.7.1 Item Description......................................................................................................................................111 5.7.2 Importance and Nature of Initial Contact ...............................................................................................111 5.8 D-13: INCENTIVES ...........................................................................................................................................113 5.8.1 Review of Incentives................................................................................................................................113 5.9 RESPONDENT BURDEN.....................................................................................................................................115 5.9.1 Definition ................................................................................................................................................115 5.9.2 Assessing Respondent Burden.................................................................................................................115 6.
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... iii 8.3.1 Introduction.............................................................................................................................................149 8.3.2 Coding Issues ..........................................................................................................................................149 8.4 C-5: CODING COMPLEX VARIABLES ................................................................................................................150 8.4.1 Introduction.............................................................................................................................................150 8.4.2 Discussion and Analysis..........................................................................................................................150 9. DATA ANALYSIS AND EXPANSION .............................................................................................................165 9.1 A-1: ASSESSING SAMPLE BIAS.........................................................................................................................165 9.1.1 Definition ................................................................................................................................................165 9.1.2 Review and Analysis................................................................................................................................165 9.2 A-2: WEIGHTING AND EXPANSION OF DATA ...................................................................................................168 9.2.1 Definition ................................................................................................................................................168 9.2.2 Review and Analysis of Weighting Procedures .......................................................................................168 9.3 A-3: MISSING DATA IMPUTATION....................................................................................................................172 9.3.1 Introduction and Background .................................................................................................................172 9.3.2 Discussion of Imputation Procedures......................................................................................................172 9.4 A-4: DATA ARCHIVING....................................................................................................................................176 9.4.1 Definition of Archiving............................................................................................................................176 9.4.2 Potential Standardized Procedures for Archiving ..................................................................................176 9.5 A-6: DOCUMENTATION ....................................................................................................................................179 9.5.1 Introduction.............................................................................................................................................179 9.5.2 Review and Discussion of Standardizing Documentation.......................................................................179 10.
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