Validation of short term recall of mobile phone use for the Interphone study

Vrijheid, Martine; E, Cardis; Armstrong, Bruce K.; Auvinen, Anssi; Berg, Gabriele; Blaasaas, Karl Gerhard; Brown, Jared A; Carroll, Matthew; Chetrit, Angela; Christensen, Helle Collatz; Deltour, Isabelle; Feychting, Maria; Giles, Graham G.; Hepworth, Sarah; Hours, Martine; Iavarone, Ivano; Johansen, Christoffer; Klæboe, Lars; Kurttio, Päivi; Lagorio, Susanna; Lönn, Stefan; McKinney, Patricia A.; Montestrucq, L.; Parslow, Roger C; Richardson, Lesley; Sadetzki, Siegal; Salminen, Tiina; Schüz, Joachim; Tynes, Tore; Woodward, Alistair

doi:10.1136/oem.2004.019281

Cited by 136 publications

(159 citation statements)

References 19 publications

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“…The timing of data collection between interviews and questionnaires are far enough apart that Divan et al mothers with delayed development children were unlikely systematically to under-or overestimate using a cell phone during pregnancy compared to mothers of children with no delayed development. In general, research looking at the agreement between self-reported cell phone use and usage measured by billing or subscription records concludes that individuals tend to overestimate call duration and underestimate the number of calls (29,30). As participation in each round of interviews and questionnaires was voluntary for mothers, it is possible that data were collected for mothers and children participating in the DNBC at only some time points such as 6 months and age 7 years and not have information available at 18 months for the infant.…”

Section: Discussionmentioning

confidence: 99%

Prenatal cell phone use and developmental milestone delays among infants

Divan

Kheifets²,

Olsen³

2011

Scand J Work Environ Health

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Section: Discussionmentioning

confidence: 99%

Prenatal cell phone use and developmental milestone delays among infants

Divan

Kheifets²,

Olsen³

2011

Scand J Work Environ Health

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“…Reports of past mobile phone use are subject to random error, as recall even in the short term has been shown to be inaccurate. [26][27][28][29] Over-reporting of the amount of mobile phone use by 50-100% has been common. This is likely to attenuate any true relationship between exposure and outcome, and it might distort dose-response.…”

Section: Discussionmentioning

confidence: 99%

Mobile phone use and risk of glioma in 5 North European countries

Lahkola

Auvinen

Raitanen

et al. 2007

Intl Journal of Cancer

162

127

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Public concern has been expressed about the possible adverse health effects of mobile telephones, mainly related to intracranial tumors. We conducted a population-based case-control study to investigate the relationship between mobile phone use and risk of glioma among 1,521 glioma patients and 3,301 controls. We found no evidence of increased risk of glioma related to regular mobile phone use (odds ratio, OR 5 0.78, 95% confidence interval, CI: 0.68, 0.91). No significant association was found across categories with duration of use, years since first use, cumulative number of calls or cumulative hours of use. When the linear trend was examined, the OR for cumulative hours of mobile phone use was 1.006 (1.002, 1.010) per 100 hr, but no such relationship was found for the years of use or the number of calls. We found no increased risks when analogue and digital phones were analyzed separately. For more than 10 years of mobile phone use reported on the side of the head where the tumor was located, an increased OR of borderline statistical significance (OR 5 1.39, 95% CI 1.01, 1.92, p trend 0.04) was found, whereas similar use on the opposite side of the head resulted in an OR of 0.98 (95% CI 0.71, 1.37). Although our results overall do not indicate an increased risk of glioma in relation to mobile phone use, the possible risk in the most heavily exposed part of the brain with long-term use needs to be explored further before firm conclusions can be drawn. ' 2007 Wiley-Liss, Inc.Key words: mobile phones; brain tumors; case-control studies Mobile phone use has increased rapidly worldwide since the early 1990s. Mobile phones emit radiofrequency electromagnetic fields that are non-ionizing radiation, i.e. have too low energy to break chemical bonds. Hence, such fields cannot cause DNA damage (mutations), which is required for cancer initiation. 1 However, radiofrequency fields might be involved in cancer development at later stages, including tumor progression or promotion. Despite the fact that no carcinogenic mechanism for radiofrequency radiation has been established, 2 there is public concern about the possible health effects of mobile phone use. This is mainly related to intracranial tumors, as mobile phones are used close to the head and the radiofrequency field is absorbed mostly in the head and neck region. The studies published on the issue have covered a relatively small number of study subjects with long-term exposure, and so far the epidemiological evidence does not suggest any clear increase of intracranial tumors related to mobile phone use, although some positive findings have been reported. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] We conducted a collaborative population-based case-control study on the association of mobile phone use with intracranial tumors in 5 Northern European countries, using a shared protocol of the INTERPHONE study coordinated by the International Agency for Research on Cancer. 20 We report here the results concerning glioma, based on the combined data from D...

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“…Information about the distribution of the multiplicative error factor e was available from INTERPHONE validation studies in which short-term recall of volunteer subjects was compared with actual usage patterns recorded by mobile phone service providers or software-modified mobile phones (Vrijheid et al, 2006). The ratio of recalled to actual phone use followed a log-normal distribution.…”

Section: Recall Biasmentioning

confidence: 99%

“…Recall errors may arise from errors in an individual's reported history of use of mobile telephones, in particular from errors in the cumulative amount of phone use reported (Vrijheid et al, 2006). If such errors occur randomly, they usually bias risk estimates for dichotomous and continuous exposures and trend effects for ordered polytomous exposures towards the null (no effect).…”

Section: Introductionmentioning

confidence: 99%

The effects of recall errors and of selection bias in epidemiologic studies of mobile phone use and cancer risk

Vrijheid

Deltour

Krewski

et al. 2006

J Expo Sci Environ Epidemiol

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This paper examines the effects of systematic and random errors in recall and of selection bias in case-control studies of mobile phone use and cancer. These sensitivity analyses are based on Monte-Carlo computer simulations and were carried out within the INTERPHONE Study, an international collaborative case-control study in 13 countries. Recall error scenarios simulated plausible values of random and systematic, non-differential and differential recall errors in amount of mobile phone use reported by study subjects. Plausible values for the recall error were obtained from validation studies. Selection bias scenarios assumed varying selection probabilities for cases and controls, mobile phone users, and non-users. Where possible these selection probabilities were based on existing information from non-respondents in INTERPHONE. Simulations used exposure distributions based on existing INTERPHONE data and assumed varying levels of the true risk of brain cancer related to mobile phone use. Results suggest that random recall errors of plausible levels can lead to a large underestimation in the risk of brain cancer associated with mobile phone use. Random errors were found to have larger impact than plausible systematic errors. Differential errors in recall had very little additional impact in the presence of large random errors. Selection bias resulting from underselection of unexposed controls led to J-shaped exposure-response patterns, with risk apparently decreasing at low to moderate exposure levels. The present results, in conjunction with those of the validation studies conducted within the INTERPHONE study, will play an important role in the interpretation of existing and future case-control studies of mobile phone use and cancer risk, including the INTERPHONE study.

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Validation of short term recall of mobile phone use for the Interphone study

Cited by 136 publications

References 19 publications

Prenatal cell phone use and developmental milestone delays among infants

Prenatal cell phone use and developmental milestone delays among infants

Mobile phone use and risk of glioma in 5 North European countries

The effects of recall errors and of selection bias in epidemiologic studies of mobile phone use and cancer risk

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