Problems and Proposals for Interview Data in Epidemiological Research

Horwitz, Ralph I.; Yu, Eunice

doi:10.1093/ije/14.3.463

Cited by 57 publications

(29 citation statements)

References 3 publications

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“…Answers varied on average by 13.4% when farmers were interviewed twice in one year as part of a mastitis study (Schukken et al 1989). Similar variation was reported in an earlier study of responses to an interview (Horwitz and Yu 1985). In the study by Schukken et al (1989), variation in responses was an accumulation of actual differences in the farmer's answer, and different interpretations by the interviewers of the same answer given by the farmer.…”

Section: Discussionsupporting

confidence: 66%

Reproductive management of dairy herds in New Zealand: Attitudes, priorities and constraints perceived by farmers managing seasonal-calving, pasture-based herds in four regions

Brownlie

Weir²,

Tarbotton³

et al. 2011

New Zealand Veterinary Journal

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AIMS: To examine attitudes, priorities, and constraints pertaining to herd reproductive management perceived by farmers managing seasonal-calving, pasture-based dairy herds in four regions of New Zealand, and to explore how these varied with demographic and biophysical factors. METHODS:Key decision makers (KDM) on 133 dairy herds in four dairy regions (Waikato, Taranaki, and north and south Canterbury) were interviewed between May and July 2009. They were asked to provide demographic and biophysical data about the farm, and to rate their attitude in relation to their own personality traits, management issues and priorities, and likely constraints affecting reproductive performance in their herds. Associations between demographic factors and attitudes, priorities and constraints were analysed using univariable and multivariable proportional-odds regression models. RESULTS:Farms in the regions studied in the South Island were larger, had larger herds and more staff than farms in the regions studied in the North Island. The farms in the South Island were more likely to be owned by a corporation, managed by younger people or people who had more education, and the herds were more likely to be fed a higher percentage of supplementary feed. The majority of KDM rated the current genetics, milksolids performance and reproductive performance of their herds as high or very high, and >70% believed that the reproductive performance had remained the same or improved over the preceding 3 years. Despite this, improving reproductive performance was the most highly rated priority for the next 3 years. The constraints considered most likely to have affected reproductive performance in the last 2 years were anoestrous cows, protracted calving periods, and low body condition scores; those considered least likely were artificial breeding and heat detection. Of the variables examined related to attitudes, priorities and likely constraints, there were significant differences between region for 10/40, and with age and occupation of the KDM for 24/40 and 5/40, respectively (p<0.05). CONCLUSIONS:The majority of KDM reported the current reproductive performance of their herds to be high or very high, yet rated improving reproductive performance as a very high priority for the next 3 years. Mismatch between perceived and actual performance may result in reduced uptake of extension programmes designed to improve performance, and accurate benchmarking may help increase uptake and engagement. Further work is needed to determine whether the attitudes and perceptions about performance of farmers affect the likelihood of changes in their management behaviour which translate to measurable change in the actual reproductive performance of their herds. The variation in attitude, priorities and perceived constraints among age groups and region indicates that design of extension programmes may need to vary with these demographics.

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Section: Discussionsupporting

confidence: 66%

Reproductive management of dairy herds in New Zealand: Attitudes, priorities and constraints perceived by farmers managing seasonal-calving, pasture-based herds in four regions

Brownlie

Weir²,

Tarbotton³

et al. 2011

New Zealand Veterinary Journal

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“…The accuracy of recall of past medical events decreases as the interval between the event and the interview becomes longer [43], which may have influenced ORs associated with diabetes, pancreatitis or other medical conditions of long duration in our study. However, the association with diabetes was no longer evident ≥10 years before pancreatic cancer diagnosis.…”

Section: Discussionmentioning

confidence: 74%

Diabetes mellitus, other medical conditions and pancreatic cancer: a case‐control study

Lipworth

Bosetti

Franceschi

et al. 2011

Diabetes Metabolism Res

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“…Recalled age at menopause was determined by subtracting date of birth from date of last menstrual period. The similarity between mean recalled age at menopause and median age at menopause (see below) as determined by probit analysis (Finney, 1962) indicates a low degree of error in recall in this population (Horwitz and Yu, 1985;Colditz et al, 1987).…”

Section: Methodsmentioning

confidence: 88%

Marital status and age at natural menopause: Considering pheromonal influence

Sievert¹,

Waddle²,

Canali

2001

American J Hum Biol

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Married women generally report a later mean age at menopause. The results reported here, from a study carried out in Greene County, New York, are no exception. Married and widowed women report a later mean age at natural menopause compared to single and divorced women (P < 0.05). To better understand the relationship between marital status and age at menopause, possible mechanistic and confounding variables are examined, in particular parity, sexual activity, smoking habits, level of education, and income. Parity and income 10 years prior to interview are significant factors, along with marital status, that explain part of the variation in age at natural menopause. An alternative explanation is the pheromonal influence of a male in the household. This would explain the consistency of results across populations. This pilot study supports further biochemical investigation.

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Problems and Proposals for Interview Data in Epidemiological Research

Cited by 57 publications

References 3 publications

Reproductive management of dairy herds in New Zealand: Attitudes, priorities and constraints perceived by farmers managing seasonal-calving, pasture-based herds in four regions

Reproductive management of dairy herds in New Zealand: Attitudes, priorities and constraints perceived by farmers managing seasonal-calving, pasture-based herds in four regions

Diabetes mellitus, other medical conditions and pancreatic cancer: a case‐control study

Marital status and age at natural menopause: Considering pheromonal influence

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