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Health Reports

A Canadian peer-reviewed journal of population health and health services research

June 2010

Evaluating the Hyperactivity/Inattention Subscale of the National Longitudinal Survey of Children and YouthEvaluating the Hyperactivity/Inattention Subscale of the National Longitudinal Survey of Children and Youth

by Alice Charach, Elizabeth Lin and Teresa To

The National Longitudinal Survey of Children and Youth (NLSCY) is a federally sponsored, national prospective study designed to measure the well-being, health and development of Canadian children from birth through young adulthood. The survey began in 1994/1995, and data collection has occurred at two-year intervals since then. As part of the interview, the parent (usually the biological mother) was asked to describe the child’s behaviour using the Children’s Behaviour Scale.

Using population data to measure outcomes of care: The case of hip and knee replacementsUsing population data to measure outcomes of care: The case of hip and knee replacements

by Claudia Sanmartin, Kimberlyn McGrail, Mike Dunbar and Eric Bohm

Joint (hip and knee) replacement can provide substantial relief to people suffering from pain and limited mobility. In Canada, approximately 23,000 hip replacements and 38,400 knee replacements were conducted in 2006/2007. The rate at which these procedures were performed more than doubled between 1995/1996 and 2005/2006, with even sharper increases between 2004/2005 and 2006/2007. The rising rate is partially a refl ection of an aging population; the recent acceleration is likely related to the identifi cation of joint replacement among the fi ve priority areas selected for meaningful reductions in waiting times.

May 2010

The Manitoba Human Papillomavirus vaccine surveillance and evaluation systemThe Manitoba Human Papillomavirus vaccine surveillance and evaluation system

by Erich V. Kliewer, Alain A. Demers, Marc Brisson, Alberto Severini, Robert Lotocki, Brenda Elias, Gregory Hammond, George Wurtak and the Manitoba HPV Research Group

A quadrivalent human papillomavirus (HPV) vaccine was approved for sale in Canada in July 2006 for females aged 9 to 26 years. This vaccine protects against infection from HPV types 6, 11, 16 and 18. Types 16 and 18 are responsible for approximately 70% of all cervical cancers, while types 6 and 11 are responsible for over 90% of anogenital warts. Clinical trials have shown that the vaccine is effective in preventing anogenital warts and precancerous cervical, vulvar and vaginal lesions. A bivalent (types 16 and 18) HPV vaccine is currently going through the Canadian regulatory approval process, and other HPV vaccines that protect against an increased number of HPV genotypes are being evaluated.

Blood pressure in Canadian children and adolescentsBlood pressure in Canadian children and adolescents

by Gilles Paradis, Mark S. Tremblay, Ian Janssen, Arnaud Chiolero and Tracey Bushnik

Elevated blood pressure (BP) is one of the most important causes of death and disability worldwide, accounting for 7.6 million premature deaths and 92 million disability-adjusted life years annually. In adolescence, hypertension is associated with increased left ventricular mass, diastolic dysfunction, fatty streaks and fi brous plaques in the coronary arteries and the aorta, and arterial wall thickening. BP levels track from childhood to adulthood, indicating that elevated BP at young ages is a risk factor for the development of hypertension in adulthood. The strength of BP tracking increases with body mass index (BMI), such that tracking is strongest in overweight and obese youth.

April 2010

Waiting time for medical specialist consultations in Canada, 2007Waiting time for medical specialist consultations in Canada, 2007

by Gisèle Carrière and Claudia Sanmartin

Accessibility is fundamental to the quality of health care. In Canada, waiting time has been identifi ed as a key measure of access and the major barrier among those who experienced difficulties obtaining care. In 2005, approximately 20% of Canadians reported adverse effects as a result of waiting for health care, including worry and stress and pain.

Weight gain during pregnancy: Adherence to Health Canada’s guidelinesWeight gain during pregnancy: Adherence to Health Canada’s guidelines

by Hélène Lowell and Doris C. Miller

Canadian women’s adherence to Health Canada’s gestational weight gain guidelines has not been assessed since the recommendations were released in 1999. Observational studies in countries with similar guidelines have shown that women tend to gain more weight than recommended while they are pregnant. The release of perinatal health data for a representative sample of Canadian women provides an opportunity to determine if women in Canada also gain more weight than is recommended.