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Tuesday, 26 March 2019

ATTENTION DEFICIT DISORDER---SUMMARY STATISTICS (UK AND US)






                                                                              





UK STATISTICS (according to AADD-UK)

                             Children 5-15 years: 3.62% of boys and 0.85% of girls have ADD

                             (Hyperkinetic Disorder sometimes also included in ADD. Prevalence rate around 1.5% for primary school boys)

                              by age 25 only 15% retain a full ADD diagnosis (0.6%-1.2% of population)

                              A further 65% fulfil the criteria  in partial remission  (2%-4% of population)

                               Estimated prevalence of ADD adults is between 3% and 4% (with roughly equal proportions of males and females??)



ADHD is a common disorder. In the UK, surveys of children between the ages of 5 and 15 years found that 3.62% of boys and 0.85% of girls had ADHD. Hyperkinetic Disorder is less common and prevalence estimates are around 1.5% for boys in the primary school years. The worldwide prevalence for children with ADHD is 5% (Faraone, Sergeant, Gilberg & Biederman, 2003).
Also, a recent review of longitudinal follow-up studies of individuals diagnosed with ADHD as children found that by age 25 only 15% retained the full ADHD diagnosis. However, a much larger proportion (65%) fulfilled criteria for either ADHD or ADHD in partial remission, indicating the persistence of some symptoms associated with clinical impairments in the majority of cases. It is likely, therefore, that about 0.6–1.2% of adults retain the full diagnosis by age 25 years and a larger percentage (2–4%) have ADHD in partial remission. This is consistent with population surveys in adult populations that estimate prevalence of ADHD in adults to be between 3 and 4% (CG72 Full Version page 26-27).

When researchers are conducting studies, they typically use the same definitions of ADHD for both boys and girls, and usually find more boys than girls with ADHD (a ratio of about 3 to 1). The gender ratio for children attending ADHD clinics, however, is usually higher than in the research surveys, which raises the possibility that females with ADHD receive less recognition. Similarly, in adult life, the male-female ratio for ADHD appears to be approximately equal, which again suggests the possibility that the high gender ratios in childhood may be partly a result of under-identifying the problem in girls, or of a different presentation of symptoms in girls (CG72 Full Version pages 127-128).














US STATISTICS (according to Center for Disease Control)

                           11% of children (4-17) have been diagnosed with ADD (as of 2016)

                           i.e. 6 million children (43% rise since 2003)

The average age of onset is 5 for severe ADD, 7 for moderate symptoms, and 8 for mild symptoms.

                          13.2% of boys
                      
                             5.6% of girls



          6.1% of US population took stimulant medications for ADD in 2007

         Emotional development for children with ADD is 30% slower than for children without ADD

         e,g. 10 year old with ADD is typically at emotional level of 7 year old

         a 16-year-old beginning driver is using the decision making skills of an 11 or 12 year old.

        75% of boys (and 60% of girls) with ADD are hyperactive

         3 to 5% of American teens suffer from ADD

                2-4 times as many traffic violations

                  4 times as many traffic accidents

                  7 times more likely to have second accident


                 4.4% of US adult population have ADD

                   Less than 20% seek help for it

                 41.3% of these cases are severe

              During their lifetimes 12.9% of US men are diagnosed with ADD, compared with 4.9% of women,

              30 to 60% of patients diagnosed with ADD during childhood continue to be affected as adults

              Adults 5 times more likely to speed.

                50% more likely to be in serious car crash

                30% more likely to be dead by age 45

                50% of adults experience anxiety disorders

                    
                                                               

Sunday, 24 March 2019

DIEGO PASSES HIS VIVA



                                                                 



                     Today is my 71st birthday. This morning my friend Diego Ruiz of Manchester University made it a double celebration by advising me that he passed his viva for his Ph.D. in Statistics on Friday! Congratulations Diego!!!!!!!!!

                    During 2016 Diego and his wife Diane visited me in Edinburgh and in the Lake District to interview me for an article which was subsequently published in the Bullutin of the International Society for Bayesian Analysis,
                                                                   


                                                          BAYESIAN  INTERVIEW

                                                                  ISBA BULLETIN

                On March 24th, 2018, Diego and Diane attended my 70th birthday celebrations in Edinburgh where they also befriended my friends John and Serene Hsu


                                                                           


                                                         





                                                                           

Friday, 22 March 2019

THE STATISTICS OF ATTENTION DEFICIT DISORDER (UPDATED)


UK STATISTICS (according to AADD-UK)

                             Children 5-15 years: 3.62% of boys and 0.85% of girls have ADD

                              by age 25 only 15% retain a full ADD diagnosis (0.6%-1.2% of population)

                              A further 65% fulfil the criteria  in partial remission  (2%-4% of population)

                               Estimated prevalence of ADD adults is between 3% and 4%


US STATISTICS (according to Center for Disease Control)

                           11% of children (4-17) have been diagnosed with ADD (as of 2016)

                           i.e. 6 million children (43% rise since 2003)

The average age of onset is 5 for severe ADD, 7 for moderate symptoms, and 8 for mild symptoms.

                          13.2% of boys
                     
                             5.6% of girls



          6.1% of US population took stimulant medications for ADD in 2007

         Emotional development for children with ADD is 30% slower than for children without ADD

         e,g. 10 year old with ADD is typically at emotional level of 7 year old

         a 16-year-old beginning driver is using the decision making skills of an 11 or 12 year old.

        75% of boys (and 60% of girls) with ADD are hyperactive

         3 to 5% of American teens suffer from ADD

                2-4 times as many traffic violations

                  4 times as many traffic accidents

                  7 times more likely to have second accident


                 4.4% of US adult population have ADD

                   Less than 20% seek help for it

                 41.3% of these cases are severe

              During their lifetimes 12.9% of US men are diagnosed with ADD, compared with 4.9% of women,

              30 to 60% of patients diagnosed with ADD during childhood continue to be affected as adults

              Adults 5 times more likely to speed.

                50% more likely to be in serious car crash

                30% more likely to be dead by age 45

                50% of adults experience anxiety disorders

                    










                                                         



                            U.S. STATISTICS (Attitude)



ADHD Statistics: Adults with ADHD. 4.4 percent of the adult US population has ADHD, but less than 20 percent of these individuals seek help for it. 41.3% of adult ADHD cases are considered severe. During their lifetimes, 12.9 percent of men will be diagnosed with ADHD, compared to 4.9 percentof women.


                              ADD RESOURCE CENTER



                                             CDC


                                   U.S. AND AROUND THE WORLD


                                           UK Schools


                                                 


UK Prevalence & Gender Distribution. ADHD is a common disorder. In the UK, surveys of children between the ages of 5 and 15 years found that 3.62% of boys and 0.85% of girls had ADHD. Hyperkinetic Disorder is less common andprevalence estimates are around 1.5% for boys in the primary school years.14 Mar 2017