1260 1.5 MEASUREMENT AND FREQUENCY Rate per 100,000: If you have one of the following rates and Divide the rate Example (Canadian male by this number: Alternatives to Percentage want to convert it to (Divisor) suicide rate) a percentage: Monthly Suicide Rates Per 1,000 0.23 per 1,000 becomes: boeed S ons + enoitesup 0.23+ 10=0.023% Per 10,000 69 6 bef 100 2.3 per 10,000 becomes: 2.3+ 100=0.023% lega eri- no need bemoheg Per 100,000 1,000 23 per 100,000 becomes: .nislexa Steer omi 23 + 1,000=0.023% w Per 1,000,000 vast 10,000 STATISTICAL GUIDE 230 per 1,000,000 becomes: Recall that percent is a rate per 100. When a characteristic is very rare, 230+10,000=0.023% percentages can be awkward to read and interpret. For instance, 0.023% To review percent , of the males in Canada committed suicide in a recent year. This is read see Exercise EXCERPT FROM THE RESEARCH ARTICLE as "twenty-three thousandths of one percent, " which is awkward to say and even more awkward to understand. Using rate per 100,000 makes this number more understandable: For males in Canada, in a recent Homicide rates in the United States have increased from one per year, the suicide rate was 23 per 100,000. Researchers often present hundred thousand at the beginning of the twentieth century to six behaviors with very low frequencies using rate per 100,000 for ease of per hundred thousand at the beginning of the twenty-first century. understanding and comparison. To convert a very small percentage to a different rate, use the follow- BOY ob ish sitt ni erit to exsmy ing multipliers: rolezubaid 101 enolfcoup 10 Multiply the Example (Canadian male suicide rate) If you want to convert a percentage by percentage to this number: noassert no sislussge or Homicides per 100,000 this rate: (Multiplier) 0.023% x 10=0.23 per 1,000 RON Per 1,000 Per 10,000 0.023% x 100=2.3 per 10,000 Per 100,000 1,000 0.023% x 1,000=23 per 100,000 Per 1,000,000 10,000 0.023% x 10,000=230 per 1,000,000 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 To convert some other rate to a percentage, use the following divisors: Year Figure 1. U.S. homicide rates from 1900-2004