TABLE 3

Mean Number of Gagging Events per Infant, per Month, According to the Questionnaire

Age, moaControlbMinimum, MaximumBLISSbMinimum, MaximumRR (95% CI)cPd
0 to <6e7.8 (15.0)0, 9014.0 (35.1)0, 2701.81 (0.97–3.38).06
69.4 (11.3)0, 6014.7 (16.7)0, 1051.56 (1.13–2.17)<.01
77.5 (12.5)0, 907.9 (10.3)0, 601.05 (0.69–1.61).81
89.4 (15.1)0, 905.6 (5.6)0, 300.60 (0.42–0.87)<.01
117.5 (17.2)0, 905.8 (11.5)0, 600.79 (0.42–1.48).46
  • Data presented as mean (SD).

  • a Months refer to whole months, unless stated otherwise, so that “8 mo” refers to 8.0–8.9 mo of age.

  • b Refer to Table 2 for the number of participants with data in each group, at each age.

  • c Data were analyzed via negative binomial regression. Results are presented as RR of gagging in BLISS participants compared with control participants, controlling for maternal education and parity (stratification variables used at randomization).

  • d P value compares the mean number of gagging events per month among BLISS participants with the mean number among control participants, controlling for maternal education and parity (stratification variables used at randomization).

  • e Questionnaire data were collected retrospectively at the beginning of the next month. For example, the data reported here for age 6 mo were collected in the 7-mo questionnaire.