Original article
Comparability of epidemiological information between self- and interviewer-administered questionnaires

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Abstract

The aim of the present study was to determine the extent to which respondents provided the same answers to a health-related lifestyle questionnaire in self- and interviewer-administered forms. A total of 234 subjects completed a 110-item questionnaire in both interviewer and self-administered forms. Modes of administration were separated by a 2-week interval. The order was determined by random allocation. The presence and the extent of the tendency to give socially acceptable responses were evaluated using percentage of bias calculated as the ratio of the difference in proportion of positive responses or the mean between interviews and questionnaires and those in questionnaires. All percentages of bias were in the positive direction, ranging from 1.4% (physical exercise) to 26.1% (general life stress). The average percentage of bias was higher in women than in men and were stronger for younger respondents. The age differences between interviewer and respondent were inversely and most strongly related to percentage of bias. Self- and interviewer-administered questionnaires yield very similar results in discriminating between subjects, but the interviewer-administered questionnaire showed systematically more desirable responses to questions related to lifestyle factors. The differences in characteristics between interviewer and respondent may be important determinants of the socially desirability bias in the interview.

Introduction

Self-administered questionnaires and interviewer-administered questionnaires have been widely used to assess health status and develop policies for disease prevention and health promotion in epidemiological studies. Although a number of studies have reported good agreement between data obtained by questionnaire and by personal interview 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, it has been recently recognized that respondents tend toward more socially desirable responses (i.e., the tendency to respond in such way as to avoid criticism) in interviews than with self-administered questionnaires 3, 5, 9, 13, 14, 15, 17, 19, 21, 22, 23, 26, 27. It has also been reported that there is a lower chance of biased responses, a higher complete assurance of confidentiality, and greater validity and accuracy with self-administered questionnaires [19]. These findings indicate that the extent of the effect to which social desirability of responses is a biasing factor [21] in an interview needs to be understood and minimized. To date, however, most epidemiological studies have evaluated interview data without consideration of the effect of social desirability. Few studies have systematically and quantitatively examined the extent of the effect of social desirability on responses concerning lifestyle factors in the community [10], although this would be valuable information when interpreting interview data.

Moreover, although many studies have examined the factors that influence socially desirable responses, most have focused on respondent-related factors such as gender 9, 13, 16, 21, 25, 28 and age 14, 28, 29, 30, 31. The style, training, age, and gender of the interviewer may also be factors; interviewers trained to have detached and dispassionate attitudes deter respondents from answering sensitive items [10]. Choi et al. reported that the performance and characteristics of interviewers affect the responses when evaluating subjects' mood [32]. Siemiatycki indicated that interviewers should strive to make a relaxed and less stressful atmosphere [2].

It is also indicated that selection of interviewers with similar backgrounds and characteristics helps to minimize the interviewer effect [32]. The effect of interviews, especially the relationship between interviewer and respondent with socially desirable responses, must inevitably be considered. However, few studies have quantitatively assessed the strength of the effect of the relationship between interviewer and respondent with regard to social desirability.

Therefore, the purposes of this study were (1) to show quantitatively the extent of social desirability on self-reported lifestyle factors and (2) to clarify the factors related to socially desirable responses, using univariate and multivariate analyses adjusted for the interaction of effects among all variables added in the model.

Section snippets

Methods

The subjects were 234 (169 male and 65 female) workers at a steel company near Nagoya City, aged 19–67 years (mean age, 43.8 years; standard deviation [SD], 12.4 years). All subjects were randomly assigned to receive either the self-administered questionnaire followed approximately 2 weeks later by the interview or the reverse order. For the self-administered questionnaire, subjects were asked to complete the questionnaires and return them within 2 weeks. When a questionnaire was not returned

Results

The response rate was 100% with both methods. Table 2 shows the distribution of the characteristics of the subjects according to the data collection methods. There was no significant difference in demographic characteristics between the two method groups.

Table 3 shows the agreement for each lifestyle factor between the self-administered and interview questionnaires. Percentage agreement exceeded 75% for all lifestyle factors. Kappa values ranged from a minimum of 0.43 (eating breakfast) to a

Discussion

The purposes of this study were (1) to examine agreements and discrepancies between responses about lifestyle factors from the self-report and interview data, (2) to examine gender and age differences in the discrepancies between the two data collection methods, and (3) to examine the effect of the respondent/interviewer relationship (i.e., age differences between respondents and interviewers). Overall, the agreements of responses obtained with the two data collection methods were good or

References (48)

  • J Siemiatycki

    A comparison of mail, telephone, and home interviews strategies for household health surveys

    Am J Public Health

    (1979)
  • I.B Pless et al.

    Apparent validity of alternative survey methods

    J Community Health

    (1979)
  • A.H Walker et al.

    Obtaining information on patient satisfaction with hospital caremail versus telephone

    Health Serv Res

    (1984)
  • L.I Pederson et al.

    Comparison of mail questionnaires and telephone interviews as data gathering strategies in a survey of attitudes toward restriction on cigarette smoking

    Can J Public Health

    (1985)
  • J Olsen et al.

    Comparison between data obtained through questionnaires and interviewslife-style habits of pregnant women

    Scand J Soc Med

    (1988)
  • S.F Culter et al.

    Assessing alcohol's consumption in general practice patentsa comparison between questionnaires and interviews

    Alcohol Alcohol

    (1988)
  • S.J McCann et al.

    Sex differences, social desirability, masculinity, and the tendency to worry

    J Genet Psychol

    (1991)
  • E.D De Leeuw

    Modes effect in survey researcha comparison of mail, telephone, and face to face survey

    Bull Method Sociol

    (1993)
  • L Fournier et al.

    A comparison of mail and telephone interviews strategies for mental health surveys

    Can J Psychiatry

    (1993)
  • G Becker et al.

    Gender-controlled measures of socially desirable responses

    J Clin Psychol

    (1994)
  • S.F Tam

    Relationship of self-concept and social desirability tendency of Hong Kong Chinese adult with physical disabilities

    Percept Mot Skills

    (1995)
  • A Yoshio et al.

    Influence of social desirability response set on self-report for assessing the outcome of treated alcoholics

    Alcohol Clin Exp Res

    (1995)
  • J.P Herbert et al.

    Social desirability bias in dietary self- report may compromise the validity of dietary intake measures

    Int J Epidemiol

    (1995)
  • C.C Lo

    Are women heavier drinkers than we thought they were

    J Stud Alcohol

    (1996)
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