Table 1.

Baseline age-adjusted characteristics (means and proportions) by aspartame intake levels derived from aspartame-containing beverages, the NIH-AARP Diet and Health Study, 1995-2000 (N = 473,984)

Baseline characteristicsOverallAspartame intake (mg/d)
None>0, <100≥100, <200≥200, <400≥400, <600≥600
Cohort participants (%)100462513754
Aspartame (mg/d) [among users only]111 [205]047147267441986
Age at entry62.062.262.561.961.460.759.9
Sex (% women)40384442413534
Ethnicity (%)
    Non–Hispanic White91909293949594
    Non–Hispanic Black4443323
    Others5654333
Education (%)
    <12 years6755657
    12-1552535151535256
    16+39374241394034
    Error or missing responses3333333
History of diabetes (%)93914192226
Family history of cancer (%)49484949504948
Alcohol (g/d)12141211101113
Smoking (%)
    Never36363735333129
    Former51475355565857
    Current121599101013
    Error or missing responses2222212
BMI27262728282929
    ≥18.5, <25 (%)35423329242119
    ≥25, <3043424446454542
    ≥30, <3516131619222326
    ≥35646791013
Physical activity (%)
    ≤3-4 /mo31322929313237
    ≤1-2 /wk22222222222119
    ≥3-4 /wk46454948474543
Calories (kcal)1,8351,9191,6921,7341,8441,8552,044
Caffeine (mg/d)366393321336367364424
Daily frequency (serving/d)
    Diet soda0.40.20.60.92.23.5
    Diet fruit drinks0.050.030.10.20.10.2
    Diet iced tea0.10.10.20.40.20.3
    Aspartame in coffee/hot tea0.30.20.61.20.60.6
  • NOTE: General linear regression model was used to estimate age-adjusted means of variables for each aspartame intake level.