H M Knoff, K R Dean
Curriculum-based measurement of at-risk students' reading skills: a preliminary investigation of bias
Psychological reports
study aimed investigate secular trends prevalence myopia 6 decades 1920s 1980s chinese adults singapore parental myopia prevalence estimated using parentcompleted questionnaire paediatric cohorts included 1 singapore cohort risk factors myopia scorm 2 strabismus amblyopia refractive error singaporean children stars 3 growing singapore towards healthy outcomes gusto published estimates myopia prevalence 5 adult studies singapore reviewed secular trends prevalence myopia correlated changes education system prevalence parental myopia scorm n 2943 stars n 4938 gusto n 1072 478 534 734 respectively corresponding calendar years parents might started schooling 1966 1973 1983 born 1960 1967 1977 respectively mean age parents 413 401 334 years respectively prevalence myopia adult studies persons started elementary school 1928 1934 1938 1939 1942 1948 1952 1958 1962 1972 1982 1995 364 397 300 315 330 264 325 487 394 520 822 859 respectively past decades prevalence myopia increased rapidly especially persons started elementary school 1980s born 1970 education system expanded singapores independence 1965 new education system introduced 1978 changes together increasing intensive schooling may contributed increase myopia prevalence