Population Assessment of Tobacco and Health (PATH) Study [United States] Public-Use Files

The Population Assessment of Tobacco and Health (PATH) Study began originally surveying 45,971 adult and youth respondents. The PATH Study was launched in 2011 to inform Food and Drug Administration's regulatory activities under the Family Smoking Prevention and Tobacco Control Act (TCA). The PATH Study is a collaboration between the National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), and the Center for Tobacco Products (CTP), Food and Drug Administration (FDA). The study sampled over 150,000 mailing addresses across the United States to create a national sample of tobacco users and non-users. These 45,971 individuals constitute the first (baseline) wave of data collected by this longitudinal cohort study. Respondents are asked to complete an interview at each follow-up wave. Youth who turn 18 by the current wave of data collection are considered "aged-up adults" and are invited to complete the Adult Interview. Additionally, 7,207 "shadow youth" (youth ages 9 to 11 sampled at Wave 1) are considered "aged-up youth" upon turning 12 years old when they are asked to join the study after parental consent. Please refer to the Public-Use Files User Guide that provides further details about these children designated as "shadow youth". At each subsequent wave of data collection, the parents of sampled youth are invited to complete a short Parent Interview about his or her child(ren).Dataset 0001 (DS0001) contains the data from the Master Linkage file. This file contains 14 variables and 67,276 cases. The file provides a master list of every person's unique identification number and what type of respondent they were for each wave. Dataset 1001 (DS1001) contains the data from the Wave 1 Adult Questionnaire. This data file contains 1,732 variables and 32,320 cases. Each of the cases represents a single, completed interview. Dataset 1002 (DS1002) contains the data from the Youth (and Parent) Questionnaire. This file contains 1,228 variables and 13,651 cases.Dataset 2001 (DS2001) contains the data from the Wave 2 Adult Questionnaire. This data file contains 2,197 variables and 28,362 cases. Of these cases, 26,447 also completed a Wave 1 Adult Questionnaire. The other 1,915 cases are "aged-up adults" having previously completed a Wave 1 Youth Questionnaire. Dataset 2002 (DS2002) contains the data from the Wave 2 Youth (and Parent) Questionnaire. This data file contains 1,389 variables and 12,172 cases. Of these cases, 10,081 also completed a Wave 1 Youth Questionnaire. The other 2,091 cases are "aged-up youth" having previously been sampled as "shadow youth." Dataset 3001 (DS3001) contains the data from the Wave 3 Adult Questionnaire. This data file contains 2,139 variables and 28,148 cases. Of these cases, 26,241 are continuing adults having completed a prior Adult Questionnaire. The other 1,907 cases are "aged-up adults" having previously completed a Youth Questionnaire. Dataset 3002 (DS3002) contains the data from the Wave 3 Youth (and Parent) Questionnaire. This data file contains 1,309 variables and 11,814 cases. Of these cases, 9,769 are continuing youth having completed a prior Youth Interview. The other 2,045 cases are "aged-up youth" having previously been sampled as "shadow youth." Datasets (DS3101, DS3102, DS3201, and DS3202) are data files comprising the weight variables for Wave 3. The weight variables for Wave 1 and Wave 2 are included in the main data files. However, in Wave 3, the weight variables have been separated into individual data files for Adult and Youth Questionnaires. The "all-waves" weight files contain weights for those respondents who have completed an interview during all three waves of data collection. The "single-wave" weight files contain weights for all respondents in Wave 3 regardless of their participation in previous waves. Dataset 3503 (DS3503) contains data derived from responses to Wave 1-3 questionnaires indicating if participants had ever/never used various tobacco products as of the Wave 3 study period. This data file contains 25 variables for all 53,178 study participants as of Wave 3. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves. Dataset 4001 contains the data from the Wave 4 Adult Questionnaire. This data file contains 2,182 variables and 33,822 cases. Of these cases, 25,857 are continuing adults having completed a prior Adult questionnaire, 1,900 are "aged-up adults" having previously completed a Youth questionnaire, and 6,065 are "replenishment sample adults" (also known as "new cohort adults" in the annotated instrument). Dataset 4002 contains the data from the Wave 4 Youth (and Parent) Questionnaire. This data file contains 1,389 variables and 14,798 cases. Of these cases, 9,365 are continuing youth having completed a prior Youth interview, 1,694 cases are "aged-up youth" having previously been sampled as "shadow youth," and 3,739 are "replenishment sample youth" (also known as "new cohort youth" in the annotated instrument). Datasets 4101, 4102, 4103, 4201, 4202, and 4203 (DS4101, DS4102, DS4103, DS4201, DS4202, and DS4203) are data files comprising the weight variables for Wave 4. In Wave 4, the weight variables have been separated into individual data files corresponding to the Wave 1 and Wave 4 Cohorts and different weight types. The "all-waves" weight files contain weights for those Wave 1 Cohort respondents who completed an interview for all waves in which they were old enough or verified their information for waves in which they were not old enough to be interviewed. The "single-wave" weight files contain weights for Wave 1 Cohort respondents at Wave 4 who completed an interview at Wave 1, regardless of their participation in previous waves. The "cross-sectional" weight files contain weights for all respondents in the Wave 4 Cohort. Dataset 4503 (DS4503) contains data derived from responses to Wave 1-4 questionnaires indicating if participants had ever/never used various tobacco products as of the Wave 4 data collection period. This data file contains 27 variables for all 67,276 study participants as of the Wave 4 data collection. This file is provided for reference only to simplify the definitions of tobacco use variables in the Adult and Youth data files for subsequent waves. Each case in an Adult data file represents a single, completed interview. Each case in a Youth data file represents one youth and his or her parent's responses about that youth. Parents who provided permission for their child to participate in a Youth Interview were asked to complete a brief interview about their child. Across all waves of data collection, an average of 0.6 percent of the parents did not complete an interview. Most questions are asked about the child. When multiple youth from the same household were selected to be in the study, the parent(s) completed separate interviews about each youth. If one parent completed two or more interviews, that parent only answered questions about himself/herself once. Those questions were then skipped in the subsequent interview(s) for the other child(ren) and the responses duplicated in that child(ren)'s data file(s).

烟草与健康人群评估研究（Population Assessment of Tobacco and Health, PATH）最初调查了45,971名成人和青少年受访者。该研究于2011年启动，旨在为美国食品药品监督管理局（Food and Drug Administration, FDA）根据《家庭吸烟预防与烟草控制法案》（Family Smoking Prevention and Tobacco Control Act, TCA）开展的监管活动提供信息支持。PATH研究由美国国立药物滥用研究所（National Institute on Drug Abuse, NIDA）、美国国立卫生研究院（National Institutes of Health, NIH）以及FDA下属的烟草产品中心（Center for Tobacco Products, CTP）联合开展。研究通过抽样美国境内15万余个邮寄地址，构建了涵盖烟草使用者与非使用者的全国性样本。这45,971名个体构成了该纵向队列研究（longitudinal cohort study）的第一波（基线，baseline）数据。受访者需在每个后续波次完成访谈：在当前波次数据收集时年满18岁的青少年被视为“成年转化人群（aged-up adults）”，并受邀完成成人访谈；此外，第一波抽样的9-11岁影子青少年样本（shadow youth）在年满12岁时被视为“青少年转化人群（aged-up youth）”，经父母同意后加入研究。关于这些被指定为“影子青少年样本”的儿童的更多细节，请参考公共使用文件用户指南（Public-Use Files User Guide）。

在每个后续波次的数据收集中，抽样青少年的父母会受邀完成一份关于其子女的简短父母访谈。

数据集0001（DS0001）包含主链接文件（Master Linkage file）的数据，共14个变量和67,276个案例，提供了每位研究对象的唯一识别码及其在各波次中的受访者类型清单。

数据集1001（DS1001）包含第一波成人问卷数据，共1,732个变量和32,320个案例，每个案例对应一次完整的访谈记录。

数据集1002（DS1002）包含第一波青少年（及父母）问卷数据，共1,228个变量和13,651个案例。

数据集2001（DS2001）包含第二波成人问卷数据，共2,197个变量和28,362个案例：其中26,447个案例同时完成了第一波成人问卷，其余1,915个案例为曾完成第一波青少年问卷的成年转化人群。

数据集2002（DS2002）包含第二波青少年（及父母）问卷数据，共1,389个变量和12,172个案例：其中10,081个案例同时完成了第一波青少年问卷，其余2,091个案例为曾作为影子青少年样本的青少年转化人群。

数据集3001（DS3001）包含第三波成人问卷数据，共2,139个变量和28,148个案例：其中26,241个案例为曾完成前序成人问卷的持续成人人群，其余1,907个案例为曾完成青少年问卷的成年转化人群。

数据集3002（DS3002）包含第三波青少年（及父母）问卷数据，共1,309个变量和11,814个案例：其中9,769个案例为曾完成前序青少年访谈的持续青少年人群，其余2,045个案例为曾作为影子青少年样本的青少年转化人群。

数据集DS3101、DS3102、DS3201和DS3202是第三波的权重变量数据文件。第一波和第二波的权重变量包含在主数据文件中，但第三波的权重变量被分离为成人和青少年问卷的独立数据文件：“全波次”权重文件包含所有三波次均参与访谈的受访者权重；“单波次”权重文件包含第三波所有受访者的权重，无论其是否参与过前序波次。

数据集3503（DS3503）包含基于第一至第三波问卷响应的数据，指示截至第三波研究期间参与者是否曾使用过各类烟草产品。该文件针对截至第三波的53,178名研究参与者，包含25个变量，仅作为参考，旨在简化后续波次成人与青少年数据文件中烟草使用变量的定义。

数据集4001包含第四波成人问卷数据，共2,182个变量和33,822个案例：其中25,857个案例为曾完成前序成人问卷的持续成人人群，1,900个案例为曾完成青少年问卷的成年转化人群，6,065个案例为补充样本成人（在注释工具中也称为“新队列成人”）。

数据集4002包含第四波青少年（及父母）问卷数据，共1,389个变量和14,798个案例：其中9,365个案例为曾完成前序青少年访谈的持续青少年人群，1,694个案例为曾作为影子青少年样本的青少年转化人群，3,739个案例为补充样本青少年（在注释工具中也称为“新队列青少年”）。

数据集DS4101、DS4102、DS4103、DS4201、DS4202和DS4203是第四波的权重变量数据文件。第四波的权重变量被分离为对应第一波与第四波队列及不同权重类型的独立数据文件：“全波次”权重文件包含第一波队列中所有在其适龄的各波次均完成访谈或在不适龄波次验证过信息的受访者权重；“单波次”权重文件包含第四波中所有曾参与第一波访谈的第一波队列受访者权重，无论其是否参与过前序波次；“横断面”权重文件包含第四波队列所有受访者的权重。

数据集4503（DS4503）包含基于第一至第四波问卷响应的数据，指示截至第四波数据收集期间参与者是否曾使用过各类烟草产品。该文件针对截至第四波的67,276名研究参与者，包含27个变量，仅作为参考，旨在简化后续波次成人与青少年数据文件中烟草使用变量的定义。

成人数据文件中的每个案例对应一次完整的访谈记录；青少年数据文件中的每个案例对应一名青少年及其父母关于该青少年的响应。同意孩子参与青少年访谈的父母需完成一份关于孩子的简短访谈。在所有波次的数据收集中，平均0.6%的父母未完成访谈。大多数问题围绕孩子展开：若同一家庭有多名青少年入选研究，父母需针对每个孩子完成单独访谈；若同一父母完成两次及以上访谈，仅需回答一次关于自身的问题，后续针对其他孩子的访谈中此类问题将被跳过，且其响应会复制到其他孩子的数据文件中。