Entire Report |
PDF (77KB) |
|
|
|
|
Chapter 1. The NHTS and 9/11 |
|
HTML (7KB) |
|
|
|
Pre- and Post-9/11 Data Files |
|
|
|
|
|
NHTS 2001--Overview |
|
|
|
|
|
Chapter 2. Weight Construction |
|
HTML (12KB) |
|
|
|
Initial Pre-9/11 and Post-9/11 Person Data Sets |
|
|
|
|
|
Person-level Weight |
|
|
|
|
|
Reweighting—Questions and Answers |
|
|
|
|
|
Adjustment for Data Splitting |
|
|
|
|
|
Raking |
|
|
|
|
|
Trimming |
|
|
|
|
|
Long-distance Trip Data Sets |
|
|
|
|
|
Long-distance Trip Weights |
|
|
|
|
|
Chapter 3. Replicate Weight Construction |
|
HTML (3KB) |
|
|
|
Person-level Replicates |
|
|
|
|
|
Replicate Construction |
|
|
|
|
|
Adjustment for Delete-One Jackknife Method |
|
|
|
|
|
Raking |
|
|
|
|
|
Long-distance Trip Replicates |
|
|
|
|
|
Chapter 4. Description of Data Files |
|
HTML (2KB) |
|
|
|
Structure of 2001 NHTS Pre-9/11 and Post-9/11 Data Files |
|
|
|
|
|
Derived Data Sets |
|
|
|
|
|
Data Dictionary |
|
|
|
|
|
Table 1. Structure of 2001 NHTS Pre-9/11 and Post-9/11 Data Files |
|
HTML (3KB) |
Excel (15KB) |
CSV (1KB) |
|
Table 2. Derived Data Sets |
|
HTML (5KB) |
Excel (14KB) |
CSV (1KB) |
|
Chapter 5. Using the Data |
|
HTML (7KB) |
|
|
|
Travel Concepts |
|
|
|
|
|
Weighting the Data |
|
|
|
|
|
Evaluating the Impact of 9/11 on Long-Distance Trip Travel Pattern |
|
|
|
|
|
Calculating the Standard Error |
|
|
|
|
|
Data File Conventions |
|
|
|
|
|
Appendix A: Codebook |
|
HTML (258KB) |
Excel (91KB) |
CSV (32KB) |
|
Appendix B: Data Dictionary |
|
|
|
|
|
Pre-9/11 Long |
|
HTML (1.59MB) |
Excel (461KB) |
CSV (189KB) |
|
Pre-9/11 Person |
|
HTML (751KB) |
Excel (231KB) |
CSV (76KB) |
|
Post-9/11 Long |
|
HTML (1.59MB) |
Excel (459KB) |
CSV (191KB) |
|
Post-9/11 Person |
|
HTML (784KB) |
Excel (241KB) |
CSV (78KB) |
|
Appendix C: Public Use Data Files |
|
|
|
|
ZIP (132.79MB) |
Appendix D: Control Totals and Adjustment Factors |
|
|
|
|
|
Table 1. Person Control Totals and Adjustment Factors Used in Weighting of Pre-9/11 NHTS Data |
|
HTML (25KB) |
Excel (22KB) |
CSV (4KB) |
|
Table 2. Person Control Totals and Adjustment Factors Used in Weighting of Post-9/11 NHTS Data |
|
HTML (32KB) |
Excel (23KB) |
CSV (5KB) |
|
Appendix E: Abbreviations, Travel Concepts, and Glossary of Terms |
|
HTML (32KB) |
|
|
|