fa مقایسه الگوی رشد نوجوانان شهر بیرجند با مرکز بین‌المللی آمارهای بهداشتی (NCHS) General پژوهشي Research Article : Growth follow-up is important for determining the health and nutrition conditions of adolescences. Both genetic and environmental factors influence the growth, and growth curve in various societies is different. The purpose is to compare the anthropometric indicators of 11 to 14-years-old boys of Birjand with NCHS.   Materials and Methods: In 2004, this cross -sectional study was done on 889 students whom were selected by multi- step cluster sampling. Height and weight were measured by standard ways related percentiles were defined and then compared with NCHS. To show percentiles, relative and absolute frequency distribution tables were used.   Results: 889 boys were selected out of 5909 junior high-school students. Height and weight normograms were provided according to age. Middle percentile (50%) of boys' weight in Birjand was 7-13 kg less than NCHS. By increasing the age, deviation of NCHS was more, and the reduction in height was more than weight.   Conclusion: Height & weight curve of 11-years-old boys in Birjand was near to standard curves of NCHS, but at 12-13-14-years were far form them and the reduction of height was more than of weight. Assessing the growth proven changes is possible by more precise examining and by providing regional growth standards and repeated follow- ups. Growth pattern,Height,Weight,Adolescences,Boys 13 17 http://mcj.bums.ac.ir/browse.php?a_code=A-10-1-406&slc_lang=fa&sid=1 Fatemeh Taheri فاطمه طاهری 10031947532846004601 10031947532846004601 No Assistant Professor, Department of Pediatrics, Faculty of Medicine, Birjand University of Medical Sciences. Birjand, Iran استادیار گروه آموزشی بیماریهای کودکان دانشکده پزشکی دانشگاه علوم پزشکی بیرجند Tayebeh Khazaei طیبه خزاعی 10031947532846004602 10031947532846004602 Yes Instructor, Faculty of Nursing and Midwifery, Birjand University of Medical Sciences. Birjand, Iran. Email: thayebehk@yahoo.com کارشناس ارشد پرستاری و عضو هیات علمی دانشگاه علوم پزشکی بیرجند. تلفن9-4443041-0561 پست الکترونیک:thayebehk@yahoo.com Mohsen Foadoddini محسن فؤادالدینی 10031947532846004603 10031947532846004603 No Physiologist, Instructor, Faculty of Nursing and Midwifery, Birjand University of Medical Sciences. Birjand, Iran فیزیولوژیست، عضو هیات علمی دانشکده پرستاری و مامایی دانشگاه علوم پزشکی بیرجند Aliakbar Eghbal علی‌اکبر اقبال 10031947532846004604 10031947532846004604 No General Practitioner پزشک عمومی، دانشگاه علوم پزشکی بیرجند Ahmad Abdolahi احمد عبدالهی 10031947532846004605 10031947532846004605 No General Practitioner پزشک عمومی، دانشگاه علوم پزشکی بیرجند