These were health status, work motivation (intrinsic or economic reasons; an interviewer received € 30,- per completed interview), frequency of interviewing (number of days per month), and whether the interviewers felt uncomfortable with the content of CQ Index.
Interview frequency and method of contact was negotiated individually, with two participants preferring face to face interviews throughout as English was not their first language.
This nondiabetic group was established to serve in future SCHS analyses as a comparison group to incident cases of type 2 diabetes from the full study population (excluded from this analysis) occurring between baseline and the follow-up interview, frequency matched on age (±2 years), time of blood draw, sex, and dialect.
Centralized random digit dialing was used to ascertain population-based control individuals, consisting of women without breast cancer, and selection fractions were designed to match case interview frequencies within strata of study center, race, and 5-year age group.
Table 2 Frequency of trespassing based on interviews Frequency of trespassing Number of respondents Daily/almost daily 16 2–4 times a week 9 Once a week/weekly 6 A couple of times a month 1 Once a month 3 A couple of times every 6 months 2 Once a year 2 Other 7 Total 46.
Of participants who reported one or more current headache disorder during their interview, the frequency of medication use reported in diaries was significantly lower than that reported in interviews (p < 0.001) (Table 4).
Symptoms and descriptive features of CC, PVFM, and voice disorders were assessed via structured case history interview, symptom frequency, and severity ratings, ratings of activity limitation, and anxiety/depression ratings.
A total of 205 cases and 390 controls completed a phone interview, food frequency questionnaire, and self-recorded waist and hip measurements.
In the 3 cases where participants could not be contacted or chose not to complete the telephone interview, migraine frequency data from patient records was used instead of the telephone survey data.
Concerning tobacco smoking, the user status was recorded as any type of tobacco use 2 years before the interview, whereas frequency and duration of tobacco smoking was based on cigarette smoking alone (Lagergren et al, 2000).
Computer-supported analysis with HPSD and MRID provides, using the formula (f/N) × 1000 (where f is the number of tagged words and N the total number of words included in HCP or patients utterances of a given interview), a frequency or density of tagged words per 1000 words.
