#108-S tracking of a subcohort of the national collaborative perinatal project

Tehranifar, Parisa; Terry, MB; Susser, Ezra

doi:10.1016/s1047-2797(02)00396-4

Cited by 2 publications

(2 citation statements)

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“…Another study was able to locate 49% of a sample of women after 6-8 years without contact using web-based resources [5]. A New York study used a combination of free telephone directories and fee-based Internet services to trace 39% of mother and daughter pairs following a 30 year no-contact period [6]. Tracing children participants of earlier epidemiologic studies to adult years is likely to present additional challenges, since information used for tracing may be limited to their names, previous schools attended, and/or parental contact details.…”

Section: Introductionmentioning

confidence: 99%

“…In another study, 60% of an original cohort of 7,030 childhood cancer survivors from the US and Canada were located using commercial firms [7]. While tracing methods in the past included the use of contact information, medical registries, and hospital records [8,9], recent developments of the World Wide Web facilitates the tracing of participants in our present day mobile society [6,10]. For large sample sizes, financial limitations may in fact dictate the sole use of webbased search engines for tracing participants of earlier cohorts, given the high costs involved in tracing participants using commercial firms [11].…”

Section: Introductionmentioning

confidence: 99%

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Predictors of locating children participants in epidemiological studies 20 years after last contact: internet resources and longitudinal research

et al. 2009

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This study examines predictors of locating participants that were last contacted 20 years ago using public web-search directories, in order to facilitate longitudinal environmental health research. Participants (n = 3,202) resided in four distinct geographical neighborhoods in Hamilton, Ontario during childhood; they were between 15 and 17 years old when they were last contacted in 1986. Data used for tracing included available addresses, telephone numbers, given names, and parental names. Reverse and forward search strategies were used to retrieve updated contact details. 43% of the sample was traced using online directories. Following ethical approval, participants were contacted using traced data and 29% of the original cohort was located. Predictors of locating participants were: availability of paternal names, being traced to original addresses or telephone numbers, gender (male), relatively higher socioeconomic status in childhood, and not being exposed to smoking in childhood. Where participants resided in childhood was not a significant predictor of locating participants. Although 13% of the sample was traced using forward search by name, only 4% were located. For participants traced to available addresses or telephone numbers, the difference between the proportions of traced and located participants was <3%. Prospective studies on children may benefit from including the listed names that pertain to each child's telephone number and full parental names at recruitment, thereby increasing the likelihood of locating participants using Internet resources. Integrating the use of Internet-based public directories for cohort reconstruction can reduce financial costs related to follow-up for longitudinal research.

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Section: Introductionmentioning

confidence: 99%