Manfred Grotenhuis

Publications (48) View all

• Source

  Available from: Manfred Grotenhuis

  Article: The reliability of a two-item scale: Pearson, Cronbach, or Spearman-Brown?

  Rob Eisinga, Manfred Te Grotenhuis, Ben Pelzer
  International Journal of Public Health 10/2012; · 2.54 Impact Factor
• Article: Saddlepoint approximations for the sum of independent non-identically distributed binomial random variables

  Rob Eisinga, Manfred Te Grotenhuis, Ben Pelzer
  Statistica Neerlandica 01/2012; · 0.50 Impact Factor
• Source

  Available from: Rense Nieuwenhuis

  Article: Influence.ME: tools for detecting influential data in mixed effects models

  Rense Nieuwenhuis, Manfred Te Grotenhuis, Ben Pelzer
  R Journal. 01/2012; 4(2):1-10.
• Source

  Available from: Manfred Grotenhuis

  Article: Interviewer BMI effects on under- and over-reporting of restrained eating: evidence from a national Dutch face-to-face survey and a postal follow-up.

  Rob Eisinga, Manfred te Grotenhuis, Junilla K Larsen, Ben Pelzer
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  ABSTRACT: To determine the effect of interviewer BMI on self-reported restrained eating in a face-to-face survey and to examine under- and over-reporting using the face-to face study and a postal follow-up. A sample of 1,212 Dutch adults was assigned to 98 interviewers with different BMI who administered an eating questionnaire. To further evaluate misreporting a mail follow-up was conducted among 504 participants. Data were analyzed using two-level hierarchical models. Interviewer BMI had a positive effect on restrained eating. Normal weight and pre-obese interviewers obtained valid responses, underweight interviewers stimulated under-reporting whereas obese interviewers triggered over-reporting. In face-to-face interviews self-reported dietary restraint is distorted by interviewer BMI. This result has implications for public health surveys, the more so given the expanding obesity epidemic.
  International Journal of Public Health 11/2011; 57(3):643-7. · 2.54 Impact Factor
• Article: Weather conditions and political party vote share in Dutch national parliament elections, 1971-2010.

  Rob Eisinga, Manfred Te Grotenhuis, Ben Pelzer
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  ABSTRACT: Inclement weather on election day is widely seen to benefit certain political parties at the expense of others. Empirical evidence for this weather-vote share hypothesis is sparse however. We examine the effects of rainfall and temperature on share of the votes of eight political parties that participated in 13 national parliament elections, held in the Netherlands from 1971 to 2010. This paper merges the election results for all Dutch municipalities with election-day weather observations drawn from all official weather stations well distributed over the country. We find that the weather parameters affect the election results in a statistically and politically significant way. Whereas the Christian Democratic party benefits from substantial rain (10 mm) on voting day by gaining one extra seat in the 150-seat Dutch national parliament, the left-wing Social Democratic (Labor) and the Socialist parties are found to suffer from cold and wet conditions. Cold (5°C) and rainy (10 mm) election day weather causes the latter parties to lose one or two parliamentary seats.
  International Journal of Bioclimatology Biometeorology 10/2011; 56(6):1161-5. · 2.25 Impact Factor