TABLE 1.

Demographic Data for Infants who Were Randomized to 4% Amethocaine or Placebo Group Before MMR Immunization

Placebo Group (N = 59)Amethocaine Group (N = 61)P Value
Gender.201
    Female3327
    Male2634
Age, d, mean (SD)383 (30)375 (13).052
Ethnicity.563
    White41 (70%)48 (79%)
    Black3 (5%)1 (2%)
    Asian5 (8%)5 (8%)
    Other10 (17%)7 (11%)
Weight, kg, mean (SD)10.02 (1.28)9.95 (1.19).748
Mother's age, y, mean (SD)34.3 (4.9)32.9 (5.4).122
Prima parity40%62%.017
Duration of last nap, min, mean (SD)63 (43)63 (41).977
Time between vaccination and last feed, min140 (58)154 (115).413
Previous painful experience10 (7/10 = circumcision)20 (16/20 = circumcision).045
  • Bonferroni correction used: α = .0045. t test and χ2 analyses were used.