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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Transfusion. 2010 Nov 18;51(4):710–718. doi: 10.1111/j.1537-2995.2010.02937.x

TABLE 2.

Repeated (within 30 days) and occasional use of transfusion and mean number of transfusion-related visits in older Americans within a 10-year period

Frequency of use within 10 years
Number of visits
with transfusion
Repeated use, within 30 days
Occasional use*
Characteristics Percent 95% CI p value Percent 95% CI p value Mean 95% CI p value
Age (years)
 65-74 5.2 4.4-6.0 21.7 19.8-23.5 2.3 2.0-2.7
 75-84 5.1 4.6-5.7 20.8 19.6-22.0 2.5 2.2-2.8
 >85 6.8 5.9-7.6 <0.01 32.4 30.7-34.0 <0.01 2.2 2.1-2.3 0.17
Sex
 Men 6.6 5.9-7.3 26.1 24.7-27.4 2.4 2.2-2.5
 Women 5.2 4.7-5.7 0.02 25.3 24.1-26.5 0.12 2.3 2.1-2.5 0.62
Race
 African-American 7.4 6.0-8.8 28.6 26.9-30.4 2.4 2.2-2.6
 Caucasian 5.6 5.2-6.1 25.5 24.4-26.7 2.3 2.2-2.5
 Other 6.0 3.4-8.6 0.06 20.0 15.3-24.6 <0.01 2.0 1.6-2.3 0.09
Ethnicity
 Mexican-American 6.7 4.7-8.7 27.9 21.0-34.7 2.2 2.0-2,5
 Other Hispanic 4.6 2.9-6.3 20.4 16.8-24.1 2.3 1.8-2.8
 Not Hispanic 5.8 5.4-6.2 0.46 25.7 24.6-26.7 0.02 2.3 2.2-2.4 0.62
Marital status
 Married 6.0 5.3-6.6 24.7 23.5-25.8 2.4 2.3-2.5
 Partnered 7.3 3.3-11.3 22.0 13.7-30.3 2.2 1.7-2.8
 Divorced or separated 6.0 4.7-7.4 24.7 22.0-27.4 2.5 1.8-3.3
 Never married 5.5 2.9-8.1 26.8 22.2-31.4 1.9 1.7-2.2
 Widowed 5.6 4.9-6.2 0.37 27.0 25.6-28.5 <0.01 2.3 2.0-2.5 0.05
Religion
 Protestant 5.5 5.0-5.9 26.3 25.1-27.6 2.2 2.1-2.3
 Catholic 6.6 5.8-7.4 24.4 22.6-26.1 2.7 2.3-3.1
 Jewish 8.2 5.2-11.2 30.0 26.7-32.7 2.4 2.0-2.8
 None 4.7 3.1-6.2 22.3 19.4-25.3 2.2 1.7-2.8
 Other 5.1 1.3-8.9 0.02 20.3 15.9-24.7 <0.01 2.0 1.6-2.4 0.13
Highest education
 No degree 7.1 6.3-7.8 29.2 27.6-30.9 2.2 2.1-2.3
 High school or GED 5.3 4.9-5.7 24.0 22.7-25.2 2.4 2.1-2.6
 AA, less than BA 5.2 3.8-6.6 23.3 21.1-25.5 2.7 2.0-3.3
 BA or higher 4.8 3.4-6.2 <0.01 24.6 21.3-27.9 <0.01 2.2 1.9-2.5 0.43
Region of residence
 Northeast 5.7 4.5-6.9 24.4 22.1-26.8 2.3 2.0-2.7
 Midwest 6.4 5.9-7.0 26.4 24.5-28.4 2.4 2.2-2.5
 South 6.1 5.5-6.8 28.2 26.1-30.2 2.3 2.1-2.5
 West 4.5 3.5-5.4 0.01 21.1 19.0-23.2 <0.01 2.3 2.1-2.5 0.92
Smoking
 Ever 6.5 6.0-7.0 26.3 25.0-27.7 2.4 2.2-2.5
 Never 4.9 4.4-5.4 <0.01 24.7 23.5-25.8 0.55 2.3 2.1-2.4 0.43
Alcohol use
 Yes 5.4 5.0-5.8 23.5 22.4-24.6 2.4 2.2-2.6
 No 6.5 5.7-7.3 <0.01 29.3 27.7-31.0 <0.01 2.2 2.1-2.4 0.27
BMI
 Underweight 7.6 5.5-9.7 33.0 29.4-36.6 2.5 1.9-3.2
 Normal 6.2 5.5-7.0 26.9 25.6-28.3 2.5 2.2-2.7
 Overweight 5.2 4.6-5.9 23.6 22.1-25.1 2.2 2.1-2.3
 Obese 5.4 4.5-6.4 0.01 24.5 22.7-26.3 <0.01 2.2 1.9-2.4 0.15
Disease or condition
 Cancer 8.9 7.8-10.1 <0.01 29.8 27.7-31.9 <0.01 2.9 2.5-3.3 <0.01
 Diabetes 8.6 7.4-9.7 <0.01 30.4 28.7-32.0 <0.01 2.6 2.4-2.8 0.03
 ESRD 37.7 29.9-45.5 <0.01 50.8 42.6-59.0 <0.01 4.5 3.9-5.2 <0.01
 Heart disease 7.5 7.0-8.1 <0.01 33.2 31.8-34.7 <0.01 2.4 2.2-2.5 0.41
 Lung disease 7.4 6.2-8.5 <0.01 29.6 27.6-31.6 <0.01 2.3 2.0-2.6 0.96
All subjects 5.8 5.4-6.2 25.6 24.6-26.7 2.3 2.2-2.4
*

Transfusion use, without reuse within 30 days.

Mean number in those who received a transfusion.