Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content

Lesson 3: Measures of Risk

Section 4: Natality (Birth) Measures

Natality measures are population-based measures of birth. These measures are used primarily by persons working in the field of maternal and child health. Table 3.11 includes some of the commonly used measures of natality.

Table 3.11 Frequently Used Measures of Natality

MeasureNumeratorDenominator10n
Crude birth rateNumber of live births during a specified time intervalMid-interval population1,000
Crude fertility rateNumber of live births during a specified time intervalNumber of women ages 15–44 years at mid-interval1,000
Crude rate of natural increaseNumber of live births minus number of deaths during a specified time intervalMid-interval population1,000
Low-birth weight ratioNumber of live births <2,500 grams during a specified time intervalNumber of live births during the same time interval100

References (This Section)

  1. McLaughlin SI, Spradling P, Drociuk D, Ridzon R, Pozsik CJ, Onorato I. Extensive transmission of Mycobacterium tuberculosis among congregated, HIV-infected prison inmates in South Carolina, United States. Int J Tuberc Lung Dis 2003;7:665–72.
  2. Tugwell BD, Lee LE, Gillette H, Lorber EM, Hedberg K, Cieslak PR. Chickenpox outbreak in a highly vaccinated school population. Pediatrics 2004 Mar;113(3 Pt 1):455–9.
  3. Uyeki TM, Zane SB, Bodnar UR, Fielding KL, Buxton JA, Miller JM, et al. Large summertime Influenza A outbreak among tourists in Alaska and the Yukon Territory. Clin Infect Dis 2003;36:1095–1102.

Lesson 3
Major Sections

Top