De-identified dataset of the PALS (Pregnancy and Lifestyle Study), a community-based study of lifestyle on fertility and reproductive outcome.

In order to assess the possible effects of lifestyle on fertility and pregnancy outcome, the PALS (Pregnancy and Lifestyle study) collected extensive data on a broad range of parameters termed 'lifestyle' from couples who were planning a natural (non-assisted) pregnancy in the coming months. There was no intervention. Participants were recruited over a six year period from 1988 to 1993 in response to extensive promotion in the local media. Male and female partners were interviewed independently and all interviews were conducted prospectively before the couple attempted to conceive. The result of each month of 'trying' was recorded and pregnancies were confirmed by urine tests and by ultrasound. The length of gestation of each pregnancy was recorded and pregnancies at term were classified with respect to weight. Multiple pregnancies and/or babies with congenital abnormalities have been excluded from the dataset. The data is stored as an xls file and each variable has a codename. For each of 582 couples there are 355 variables, the codes for which are described in a separate metadata file. The questionnaire based data includes information about households, occupation, chemical exposures at work and home, diet, smoking, alcohol use, hobbies, exercise and health. Recorded observations include monthly pregnancy tests and pregnancy outcomes.

为评估生活方式对生育能力与妊娠结局的潜在影响，PALS（妊娠与生活方式研究，Pregnancy and Lifestyle study）针对计划在未来数月自然受孕（非辅助生殖）的夫妇，收集了涵盖多类"生活方式"相关参数的丰富数据。本研究无任何干预措施。
研究于1988年至1993年的六年间，通过本地媒体广泛宣传招募受试者。夫妇双方将接受独立访谈，所有访谈均在夫妇尝试受孕前前瞻性开展。
研究记录了每月"尝试受孕"的结果，并通过尿液检测与超声检查确认妊娠情况。每例妊娠的时长均被记录，足月妊娠将按新生儿体重进行分类。本数据集已排除多胎妊娠及/或伴先天性异常的胎儿相关数据。
该数据集以xls格式存储，每个变量均配有专属代码名。582对夫妇各对应355个变量，变量代码的详细说明收录于独立的元数据文件中。
基于问卷采集的数据涵盖家庭状况、职业信息、工作与居家环境中的化学暴露情况、饮食、吸烟、饮酒、业余爱好、运动及健康状况等。记录的观测数据包括每月妊娠检测结果与妊娠结局。