NOHSS Child Indicators – 1999
Methods for State Oral Health Surveys that began data collection in 1999
Updated January 21, 2015
The survey was completed over a three-year period from 1999-2002. The sampling frame was all public elementary schools in communities with a population greater than or equal to 1,000 not on an Indian reservation (based on the 1990 Census). In rural communities, one elementary school was randomly selected while three schools were selected in larger communities; one low income, one middle income, and one higher income school based on the percent of children eligible for the free and/or reduced price meal program. In the state’s two major metropolitan areas, additional schools were selected with implicit stratification by free and reduced lunch eligibility; 27 schools in Phoenix and 10 schools in Tucson. The goal was to screen 30 students in each of the following grades; kindergarten, first, second and third. The data were collected by trained and calibrated dental hygienists using diagnostic criteria comparable to ASTDD’s 1999 Basic Screening Survey. The data were weighted for the sampling scheme and adjusted for nonresponse.
The survey was completed during the 1999-2000 school year. The sampling frame was resident public and private schools with at least six students in grades 2, 3, and 6 combined. The sampling unit was schools rather than grades. Schools were sampled statewide within six health districts separately, proportional to the average size of the combined three grades. All students present within a grade in the school were included. The diagnostic criteria were comparable to ASTDD’s 1999 Basic Screening Survey. The survey had a high response rate (90% of second graders, 80% of 3rd graders); estimates were not adjusted for nonresponse. The data were weighted to account for the survey design.
The survey was conducted during the 1999-2000 school year. The sampling frame for the survey consisted of a list of all public elementary schools provided by the State Department of Education. Enrollment figures were used to define two strata-counties with 3,000 or more elementary school students and counties with less than 3,000 students. In counties with 3,000 or more elementary school students, a 1 of 10 random sample of schools was drawn. In counties with less than 3,000 students, two schools per county were randomly selected. All 3rd grade students within a school were eligible to participate if they returned a positive consent form. The diagnostic criteria were comparable to ASTDD’s 1999 Basic Screening Survey. The data were weighted to account for the survey design. Of the students selected, 47% responded. The estimates were not adjusted for nonresponse.
The survey was conducted during the 1999-2000 school year. An electronic list of all public elementary schools in Washington was obtained from the Superintendent of Public Instruction. All schools with at least 25 children in 2nd or 3rd grade were included in the sampling frame. Eligible schools then were ordered by percent minority enrollment. Fifty-five elementary schools were randomly selected for participation in Smile Survey 2000. Seven of the schools refused to participate resulting in 48 schools with an enrollment of 6,814 children in second and third grade—the response rate was 40%. Only those children who returned a positive consent form were screened. Diagnostic criteria were consistent with those outlined in ASTDD’s 1999 Basic Screening Survey. In the state, 31% of schoolchildren are eligible for the free/reduced lunch program (FRL); among the students attending schools in the sample and participating in the survey, 37% were eligible for FRL. The estimates were not adjusted for nonresponse.