Motorcycle helmet fixation status is more crucial than helmet type in providing protection to the head.

[1]  B. Everitt,et al.  Statistical methods for rates and proportions , 1973 .

[2]  J. Fleiss,et al.  Statistical methods for rates and proportions , 1973 .

[3]  R. G. Vaughan,et al.  MOTOR CYCLE HELMETS AND FACIAL INJURIES , 1977, The Medical journal of Australia.

[4]  G. M. Mackay,et al.  A study of 93 fatal two-wheeled motor vehicle accidents , 1979 .

[5]  David R. Thom,et al.  MOTORCYCLE ACCIDENT CAUSE FACTORS AND IDENTIFICATION OF COUNTERMEASURES. VOLUME I: TECHNICAL REPORT , 1981 .

[6]  H. Cannell,et al.  Head and facial injuries after low-speed motor-cycle accidents. , 1982, The British journal of oral surgery.

[7]  Jennifer L. Kelsey,et al.  Methods in Observational Epidemiology , 1986 .

[8]  Å. Nygren,et al.  Permanent Medical Impairment Among Road-Traffic Victims and Risk of Serious Consequences , 1986 .

[9]  S. Luchter.  The Use of Impairment for Establishing Accident Injury Research Priorities , 1987 .

[10]  N J Mills,et al.  Survey of head, helmet and headform sizes related to motorcycle helmet design. , 1988, Ergonomics.

[11]  R. Rutledge,et al.  The association of helmet use with the outcome of motorcycle crash injury when controlling for crash/injury severity. , 1993, Accident; analysis and prevention.

[12]  R Patel,et al.  An improved motorcycle helmet design for tropical climates. , 1993, Applied ergonomics.

[13]  A. Shibata,et al.  Risk factors of fatality in motor vehicle traffic accidents. , 1994, Accident; analysis and prevention.

[14]  R. Muelleman,et al.  Motorcycle helmets and spinal injuries: dispelling the myth. , 1994, Annals of emergency medicine.

[15]  Y. Tsai,et al.  Case-control study of the effectiveness of different types of helmets for the prevention of head injuries among motorcycle riders in Taipei, Taiwan. , 1995, American journal of epidemiology.

[16]  P Conrad,et al.  Helmets, injuries and cultural definitions: motorcycle injury in urban Indonesia. , 1996, Accident; analysis and prevention.

[17]  B. Snyder.  Motorcycle helmet use and injury outcome and hospitalization costs from crashes in Washington state , 1996 .

[18]  H H Hurt.  Testing the positional stability of motorcycle helmets , 1998 .

[19]  F. Rivara,et al.  Fit of bicycle safety helmets and risk of head injuries in children , 1999, Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention.

[20]  S. KULANTHAYAN*,et al.  Modeling of Compliance Behavior of Motorcyclists to Proper Usage of Safety Helmets in Malaysia , 2001 .

[21]  D. Thompson,et al.  Cochrane Review : Helmets for preventing head and facial injuries in bicyclists , 2017 .

[22]  Kristy B Arbogast,et al.  Accuracy of self-reported data for estimating crash severity. , 2003, Accident; analysis and prevention.

[23]  L. Tsai,et al.  Relation between Motorcycle Helmet Use and Cervical Spinal Cord Injury , 2004, Neuroepidemiology.

[24]  P. Layde,et al.  Increased risk of death or disability in unhelmeted Wisconsin motorcyclists. , 2005, WMJ : official publication of the State Medical Society of Wisconsin.

[25]  A. Croft,et al.  Correlating crash severity with injury risk, injury severity, and long-term symptoms in low velocity motor vehicle collisions. , 2005, Medical science monitor : international medical journal of experimental and clinical research.

[26]  Global Road Safety Partnership.  Helmets : a road safety manual for decision-makers and practitioners , 2006 .

[27]  R. Ivers,et al.  Prevalence of helmet use among motorcycle riders in Vietnam , 2006, Injury Prevention.

[28]  Gong-Li Li,et al.  Improper motorcycle helmet use in provincial areas of a developing country. , 2008, Accident; analysis and prevention.

[29]  S. Boufous,et al.  Helmets for preventing injury in motorcycle riders. , 2008, The Cochrane database of systematic reviews.

[30]  R. Ramli,et al.  Pattern of Maxillofacial Injuries in Motorcyclists in Malaysia , 2008, The Journal of craniofacial surgery.

[31]  R. McClure,et al.  Ten-year outcomes following traumatic brain injury: A population-based cohort , 2008, Brain injury.

[32]  L. Dandona,et al.  Crash characteristics and patterns of injury among hospitalized motorised two-wheeled vehicle users in urban India , 2009, BMC public health.

[33]  A. McIntosh,et al.  Helmet Stability and Fit in Australian Pedal and Motor Cyclist Populations , 2009 .

[34]  R. McClure,et al.  Bio-psychosocial determinants of persistent pain 6 months after non-life-threatening acute orthopaedic trauma. , 2010, The journal of pain : official journal of the American Pain Society.

[35]  S. Nunn,et al.  Death by Motorcycle: Background, Behavioral, and Situational Correlates of Fatal Motorcycle Collisions *,† , 2011, Journal of forensic sciences.

[36]  T. Senserrick,et al.  Prevalence rates of helmet use among motorcycle riders in a developed region in China. , 2011, Accident; analysis and prevention.

[37]  Mau-Roung Lin,et al.  Effectiveness of different types of motorcycle helmets and effects of their improper use on head injuries. , 2011, International journal of epidemiology.

[38]  Tobago.  Population and Housing Census. , 2011 .

[39]  Judith K Sluiter,et al.  The effect of an optimised helmet fit on neck load and neck pain during military helicopter flights. , 2012, Applied ergonomics.

[40]  R. Ramli.  Effectiveness of motorcycle helmets for preventing head and facial injuries , 2013 .

[41]  B. Leong,et al.  Concomitant injuries and its influence on functional outcome after traumatic brain injury , 2013, Disability and rehabilitation.

[42]  Ahmad Farhan Mohd Sadullah,et al.  The effect of motorcycle helmet type, components and fixation status on facial injury in Klang Valley, Malaysia: a case control study , 2014, BMC Emergency Medicine.

[43]  Xiaolin Xu,et al.  Dying online: live broadcasts of Chinese emerging adult suicides and crisis response behaviors , 2016, BMC Public Health.