title: Inter-rater reliability study of the Peritron™ perineometer in pregnant women.
abstract: OBJECTIVE
  To assess the inter-rater reliability of two raters for the mean and single maximal value of three vaginal maximum voluntary contractions (MVCs) using the Peritron™ perineometer for study participants in the first and second trimesters of pregnancy.
  
  
  METHODS
  Thirty-six low-risk pregnant women.
  
  
  METHODS
  The assessments were done by two different examiners with an interval of 2 to 7 days. For statistical analysis, the concordance correlation coefficient (CCC) and Bland-Altman limits of agreement were used.
  
  
  RESULTS
  For the overall sample, good reliability of 0.80 was found analyzing the mean of three MVCs and for the single maximal value (CCC = 0.79). Good reliability was found for the mean of three MVCs (0.81 and 0.78) for the first and second trimesters, respectively. Good reliability of 0.89 was found in the first trimester and a moderate reliability of 0.70 for the second trimester when analyzing the single maximal value of three MVCs.
  
  
  CONCLUSIONS
  Good inter-rater reliability was found for the overall sample and first trimester of pregnancy for both mean values and single maximal values of the three MVCs. A good and moderate reliability was respectively found in the second trimester in analyzing the mean and single maximum values of three MVCs.
authors.affiliation: a Rehabilitation Program and Functional Performance , Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto , Brazil.
authors.forename: Juliana dos Santos
authors.initials: Jdos S
authors.lastname: Ribeiro
authors.affiliation: b Department of Biomechanics, Physical Medicine and Rehabilitation of the Locomotor System , Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto , Brazil.
authors.forename: Elaine Caldeira de Oliveira
authors.initials: EC
authors.lastname: Guirro
authors.affiliation: a Rehabilitation Program and Functional Performance , Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto , Brazil.
authors.forename: Maíra de Menezes
authors.initials: Mde M
authors.lastname: Franco
authors.affiliation: a Rehabilitation Program and Functional Performance , Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto , Brazil.
authors.forename: Thaiana Bezerra
authors.initials: TB
authors.lastname: Duarte
authors.affiliation: a Rehabilitation Program and Functional Performance , Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto , Brazil.
authors.forename: Jéssica Maffeis
authors.initials: JM
authors.lastname: Pomini
authors.affiliation: b Department of Biomechanics, Physical Medicine and Rehabilitation of the Locomotor System , Ribeirão Preto Medical School, University of São Paulo , Ribeirão Preto , Brazil.
authors.forename: Cristine Homsi Jorge
authors.initials: CH
authors.lastname: Ferreira
mesh_terms: D000293:Adolescent; D000328:Adult; D004867:Equipment Design; D005260:Female; D006801:Humans; D009119:Muscle Contraction; D015588:Observer Variation; D017773:Pelvic Floor / Q000502:physiology*; D011237:Predictive Value of Tests; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011312:Pressure; D015203:Reproducibility of Results; D014160:Transducers, Pressure; D014621:Vagina; D014836:Volition; D055815:Young Adult
keywords: Assessment; pelvic floor; physiotherapy; pregnancy; reliability