Apnea of Prematurity
Conditions
Keywords
Moderate preterm infant, Caffeine citrate
Brief summary
The objective of this study is to evaluate the effect of continuing treatment with caffeine citrate in the hospital and at home in moderately preterm infants with resolved apnea of prematurity on days of hospitalization after randomization.
Detailed description
Study subjects will be patients in the NICU at one of the participating hospitals at a Neonatal Research Network site. Infants who meet the eligibility criteria will be randomized to either caffeine citrate at 10 mg/kg/dose or placebo (equal volume of all the excipients except for the active ingredient, caffeine citrate) to be given daily beginning within 72 hours of open label caffeine discontinuation. The infant may still require hospitalization for observation after discontinuation of open label caffeine or for other discharge issues such as temperature control or feeding tolerance. Once deemed ready for discharge, infants will be continued at home on the same dose of caffeine citrate or placebo for the first 28 days after hospital discharge. On the day of discharge, the parent will be supplied with 28 numbered vials with oral caffeine citrate (intervention group) or placebo at an equivalent volume (placebo group). The parents will be educated by the research nurse, discharge nurse, physician, or pharmacist on storage and administration of study medication. A member of the research team will contact the parents to obtain post-discharge information within 72 hours after discharge, once a week for the first 4 weeks, and biweekly during the weeks 5 to 8 after discharge.
Interventions
The study intervention is caffeine citrate given once daily at 10 mg/kg/day. It is given orally, before hospital discharge and 28 days after discharge.
The study intervention is placebo given once daily at a volume equivalent to 10 mg/kg of caffeine citrate. It is given orally, before hospital discharge and 28 days after discharge.
Sponsors
Study design
Intervention model description
Sample size for this trial will be flexible: the trial will be stopped for efficacy or futility based on pre-determined statistical thresholds or based on study drug availability.
Eligibility
Inclusion criteria
* Inborn and outborn infants of 29 0/7 to 33 6/7 weeks gestational age at birth * admitted to hospitals of the NICHD NRN who, are at time of enrollment: * ≤35 6/7 weeks post-menstrual age at the time of randomization * Receiving caffeine with plan to discontinue treatment or just discontinued caffeine treatment * Receiving feeds at a volume of ≥120 ml/kg/day by oral and/or tube feeding * Ability to start study medication within 72 hours after stopping caffeine
Exclusion criteria
* On respiratory therapy (oxygen more than room air equivalent for high altitude sites, nasal cannula, continuous positive pressure ventilation, and/or mechanical ventilation) * Infants who would otherwise be discharged home on apnea monitor due to underlying disease or family history, including history of a sibling with sudden infant death syndrome * Parental request for apnea monitor * Congenital heart disease other than atrial septal defect, ventricular septal defect, or patent ductus arteriosus * Neuromuscular conditions affecting respiration * Major congenital malformation and/or genetic disorder * Plans to transfer to a non-NRN site before discharge * Unable to obtain parental or guardian consent
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Number of Days Between Randomization and Hospital Discharge | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days between randomization and hospital discharge. This outcome is censored at 48 weeks PMA and at time of transfer or death. |
| Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 4 Weeks Post-discharge | Discharge through 4 weeks post-discharge | Number of sick visits related to apneic or apparent life-threatening events within first 4 weeks post-discharge MEASTYPE=SEC |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The Number of Days to Apnea/ Bradycardia Free for 5 Consecutive Days | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days to apnea/ bradycardia free for 5 consecutive days. This outcome is censored at 48 weeks PMA |
| The Number of Days to Oral Feeds >140 ml/kg/Day or Growing on Less Than 140 ml/kg/Day for at Least 48 Hours | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days oral feeds \>140 ml/kg/day or growing on less than 140 ml/kg/day for at least 48 hours. This outcome is censored at 48 weeks PMA |
| Post-menstrual Age at Discharge | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The post-menstrual age of the infant at discharge censored at 48 weeks PMA and at time of transfer or death |
| Weight Gain From Randomization Until Status | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | Weight gain from randomization until status %(discharge up to 48 wks PMA, with censoring at time of transfer or death%). |
| The Number of Days After Randomization Until Status That Infant Had at Least Two Consecutive Heart Rates >200 Documented at Least 3 Hours Apart | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days after randomization until status that infant had at least two consecutive heart rates \>200 documented at least 3 hours apart |
| Treatment for High Blood Pressure | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | Treatment for high blood pressure initiated after randomization until status. |
| The Number of Episodes Between Randomization and Status That Infant Was Placed NPO for >= 24 Hours | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of episodes between randomization and status that infant was placed NPO for \>= 24 hours |
| Use of Anti-reflux Medications | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The use of anti-reflux medications started between randomization and status |
| Number of Days That Significant Apnea/Bradycardia | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days that significant apnea/bradycardia, as defined by documentation of infant receiving any of the following between randomization and status: open label caffeine, other methylxanthines, doxapram, CPAP or ventilatory support for apnea/bradycardia. |
| The Number of Days to Physiologic Maturity After Randomization | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days to physiologic maturity after randomization. Physiologic maturity is defined: 1. Temperature: out of the incubator for at least 48 hours with normal body temperature; 2. Feeding: oral feeding at a volume of at least 140 ml/kg for 48 hours or growing on less than 140 ml/kg/day for at least 48 hours; 3. Respiratory: apnea-free for at least 5 consecutive days. This outcome is censored at 48 weeks PMA |
| Number of All-cause Readmissions Within First 4 Weeks Post-discharge | Discharge through 4 weeks post-discharge | Number of all-cause readmissions within first 4 weeks post-discharge |
| Number of All-cause Readmissions Within Second 4 Weeks Post-discharge | 4 weeks through 8 weeks post-discharge | Number of all-cause readmissions within second 4 weeks post-discharge |
| Number of All-cause Readmissions Within First 8 Weeks Post-discharge | Discharge through 8 weeks post-discharge | Number of all-cause readmissions within first 8 weeks post-discharge |
| Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 4 Weeks Post-discharge | Discharge through 4 weeks post-discharge | Number of all-cause sick visits, urgent care, emergency rooms, or health care provider%'s office, within first 4 weeks post-discharge |
| Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within Second 4 Weeks Post-discharge | 4 weeks through 8 weeks post-discharge | Number of all-cause sick visits, urgent care, emergency rooms, or health care provider%'s office, within second 4 weeks post-discharge |
| Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 8 Weeks Post-discharge | Discharge through 8 weeks post-discharge | Number of all-cause sick visits, urgent care, emergency rooms, or health care provider%'s office, within first 8 weeks post-discharge |
| Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within Second 4 Weeks Post-discharge | 4 weeks through 8 weeks post-discharge | Number of sick visits related to apneic or apparent life-threatening events within second 4 weeks post-discharge |
| Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 8 Weeks Post-discharge | Discharge through 8 weeks post-discharge | Number of sick visits related to apneic or apparent life-threatening events within first 8 weeks post-discharge |
| All-cause Mortality | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | All-cause mortality |
| The Number of Days to When Out of Incubator for 48 Hours: When Maintained Stable Temp for 48 Hrs | Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA | The number of days to when out of incubator for 48 hours: when maintained stable temp for 48 hrs. This outcome is censored at 48 weeks PMA |
Countries
United States
Participant flow
Recruitment details
Infants were recruited into the study based on eligibility and parental/guardian consent. Baseline characteristics of the mother were collected (with consent) for use in statistical analysis.
Participants by arm
| Arm | Count |
|---|---|
| Caffeine Daily weight-adjusted doses of Caffeine Citrate while in the hospital, followed by 4 weeks of at home administration by parent/guardians | 416 |
| Placebo Daily weight-adjusted doses of Placebo while in the hospital, followed by 4 weeks of at home administration by parent/guardians | 411 |
| Total | 827 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 |
|---|---|---|---|
| Overall Study | Death | 1 | 0 |
| Overall Study | Lost to Follow-up | 31 | 35 |
| Overall Study | Still in hospital at 48 0/7 wks Post-menstrual Age (PMA) | 1 | 1 |
| Overall Study | Transferred to another facility | 10 | 7 |
| Overall Study | Withdrawal by Subject | 28 | 17 |
Baseline characteristics
| Characteristic | Placebo | Total | Caffeine |
|---|---|---|---|
| Age, Continuous | 29.9 years STANDARD_DEVIATION 5.8 | 29.9 years STANDARD_DEVIATION 5.8 | 30 years STANDARD_DEVIATION 5.8 |
| Apgar score of Infant at 1 minute after birth | 6 score | 6 score | 6 score |
| Apgar score of Infant at 5 minutes after birth | 8 score | 8 score | 8 score |
| Birth weight of infant | 1564.3 grams STANDARD_DEVIATION 357.4 | 1554.6 grams STANDARD_DEVIATION 357.7 | 1545 grams STANDARD_DEVIATION 358.1 |
| Gestational Age | 31.2 weeks STANDARD_DEVIATION 1.2 | 31.2 weeks STANDARD_DEVIATION 1.2 | 31.2 weeks STANDARD_DEVIATION 1.2 |
| Gravidity | 2 years | 2 years | 2.5 years |
| Marital status Married | 233 Participants | 446 Participants | 213 Participants |
| Marital status Single | 175 Participants | 375 Participants | 200 Participants |
| Marital status Unknown | 3 Participants | 6 Participants | 3 Participants |
| Mothers education, Customized 8th grade or less | 5 Participants | 14 Participants | 9 Participants |
| Mothers education, Customized 9th to 12th grade | 22 Participants | 55 Participants | 33 Participants |
| Mothers education, Customized College degree | 75 Participants | 143 Participants | 68 Participants |
| Mothers education, Customized Graduate degree | 38 Participants | 76 Participants | 38 Participants |
| Mothers education, Customized High School degree | 102 Participants | 188 Participants | 86 Participants |
| Mothers education, Customized Partial college/Associate degree | 90 Participants | 183 Participants | 93 Participants |
| Mothers education, Customized Trade or technical school | 10 Participants | 20 Participants | 10 Participants |
| Mothers education, Customized Unknown | 69 Participants | 148 Participants | 79 Participants |
| Mothers insurance, Customized Private | 213 Participants | 420 Participants | 207 Participants |
| Mothers insurance, Customized Public | 190 Participants | 393 Participants | 203 Participants |
| Mothers insurance, Customized Self-pay/uninsured | 7 Participants | 13 Participants | 6 Participants |
| Mothers insurance, Customized Unknown | 1 Participants | 1 Participants | 0 Participants |
| Number of Infants who Required Chest compressions No | 405 Participants | 821 Participants | 416 Participants |
| Number of Infants who Required Chest compressions Unknown | 1 Participants | 1 Participants | 0 Participants |
| Number of Infants who Required Chest compressions Yes | 5 Participants | 5 Participants | 0 Participants |
| Number of Infants who Required CPAP No | 81 Participants | 162 Participants | 81 Participants |
| Number of Infants who Required CPAP Unknown | 1 Participants | 1 Participants | 0 Participants |
| Number of Infants who Required CPAP Yes | 329 Participants | 664 Participants | 335 Participants |
| Number of Infants who Required Epinephrine No | 409 Participants | 825 Participants | 416 Participants |
| Number of Infants who Required Epinephrine Yes | 2 Participants | 2 Participants | 0 Participants |
| Number of Infants who Required Intubation No | 366 Participants | 736 Participants | 370 Participants |
| Number of Infants who Required Intubation Yes | 45 Participants | 91 Participants | 46 Participants |
| Number of Infants who Required Oxygen No | 68 Participants | 139 Participants | 71 Participants |
| Number of Infants who Required Oxygen Unknown | 1 Participants | 2 Participants | 1 Participants |
| Number of Infants who Required Oxygen Yes | 342 Participants | 686 Participants | 344 Participants |
| Number of Infants who Required Positive pressure ventilation No | 185 Participants | 373 Participants | 188 Participants |
| Number of Infants who Required Positive pressure ventilation Unknown | 1 Participants | 1 Participants | 0 Participants |
| Number of Infants who Required Positive pressure ventilation Yes | 225 Participants | 453 Participants | 228 Participants |
| Parity | 2 years | 2 years | 2 years |
| Race/Ethnicity, Customized American Indian or Alaskan Native | 12 Participants | 19 Participants | 7 Participants |
| Race/Ethnicity, Customized Asian | 9 Participants | 21 Participants | 12 Participants |
| Race/Ethnicity, Customized Black | 110 Participants | 220 Participants | 110 Participants |
| Race/Ethnicity, Customized Hispanic or Latino | 54 Participants | 117 Participants | 63 Participants |
| Race/Ethnicity, Customized More Than One Race | 2 Participants | 5 Participants | 3 Participants |
| Race/Ethnicity, Customized Native Hawaiian or Other Pacific Islander | 4 Participants | 8 Participants | 4 Participants |
| Race/Ethnicity, Customized Not Hispanic or Latino | 345 Participants | 683 Participants | 338 Participants |
| Race/Ethnicity, Customized Unknown | 2 Participants | 4 Participants | 2 Participants |
| Race/Ethnicity, Customized Unknown or Not Reported | 10 Participants | 24 Participants | 13 Participants |
| Race/Ethnicity, Customized White | 261 Participants | 526 Participants | 265 Participants |
| Sex/Gender, Customized Female | 207 Participants | 420 Participants | 213 Participants |
| Sex/Gender, Customized Male | 204 Participants | 407 Participants | 203 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 1 / 416 | 0 / 411 |
| other Total, other adverse events | 10 / 416 | 24 / 411 |
| serious Total, serious adverse events | 12 / 416 | 22 / 411 |
Outcome results
Number of Days Between Randomization and Hospital Discharge
The number of days between randomization and hospital discharge. This outcome is censored at 48 weeks PMA and at time of transfer or death.
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of Days Between Randomization and Hospital Discharge | 18 days |
| Placebo | Number of Days Between Randomization and Hospital Discharge | 16.5 days |
Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 4 Weeks Post-discharge
Number of sick visits related to apneic or apparent life-threatening events within first 4 weeks post-discharge MEASTYPE=SEC
Time frame: Discharge through 4 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 4 Weeks Post-discharge | 0 count of apnea visits |
| Placebo | Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 4 Weeks Post-discharge | 0 count of apnea visits |
All-cause Mortality
All-cause mortality
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Category | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Caffeine | All-cause Mortality | No | 415 Participants |
| Caffeine | All-cause Mortality | Yes | 1 Participants |
| Placebo | All-cause Mortality | No | 411 Participants |
| Placebo | All-cause Mortality | Yes | 0 Participants |
Number of All-cause Readmissions Within First 4 Weeks Post-discharge
Number of all-cause readmissions within first 4 weeks post-discharge
Time frame: Discharge through 4 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of All-cause Readmissions Within First 4 Weeks Post-discharge | 0 count of readmissions |
| Placebo | Number of All-cause Readmissions Within First 4 Weeks Post-discharge | 0 count of readmissions |
Number of All-cause Readmissions Within First 8 Weeks Post-discharge
Number of all-cause readmissions within first 8 weeks post-discharge
Time frame: Discharge through 8 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of All-cause Readmissions Within First 8 Weeks Post-discharge | 0 count of readmissions |
| Placebo | Number of All-cause Readmissions Within First 8 Weeks Post-discharge | 0 count of readmissions |
Number of All-cause Readmissions Within Second 4 Weeks Post-discharge
Number of all-cause readmissions within second 4 weeks post-discharge
Time frame: 4 weeks through 8 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of All-cause Readmissions Within Second 4 Weeks Post-discharge | 0 count of readmissions |
| Placebo | Number of All-cause Readmissions Within Second 4 Weeks Post-discharge | 0 count of readmissions |
Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 4 Weeks Post-discharge
Number of all-cause sick visits, urgent care, emergency rooms, or health care provider%'s office, within first 4 weeks post-discharge
Time frame: Discharge through 4 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 4 Weeks Post-discharge | 0 count of sick visits |
| Placebo | Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 4 Weeks Post-discharge | 0 count of sick visits |
Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 8 Weeks Post-discharge
Number of all-cause sick visits, urgent care, emergency rooms, or health care provider%'s office, within first 8 weeks post-discharge
Time frame: Discharge through 8 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 8 Weeks Post-discharge | 0 count of sick visits |
| Placebo | Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within First 8 Weeks Post-discharge | 0 count of sick visits |
Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within Second 4 Weeks Post-discharge
Number of all-cause sick visits, urgent care, emergency rooms, or health care provider%'s office, within second 4 weeks post-discharge
Time frame: 4 weeks through 8 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within Second 4 Weeks Post-discharge | 0 count of sick visits |
| Placebo | Number of All-cause Sick Visits, Urgent Care, Emergency Rooms, or Health Care Provider%'s Office, Within Second 4 Weeks Post-discharge | 0 count of sick visits |
Number of Days That Significant Apnea/Bradycardia
The number of days that significant apnea/bradycardia, as defined by documentation of infant receiving any of the following between randomization and status: open label caffeine, other methylxanthines, doxapram, CPAP or ventilatory support for apnea/bradycardia.
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of Days That Significant Apnea/Bradycardia | 0 days |
| Placebo | Number of Days That Significant Apnea/Bradycardia | 0 days |
Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 8 Weeks Post-discharge
Number of sick visits related to apneic or apparent life-threatening events within first 8 weeks post-discharge
Time frame: Discharge through 8 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 8 Weeks Post-discharge | 0 count of apnea visits |
| Placebo | Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within First 8 Weeks Post-discharge | 0 count of apnea visits |
Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within Second 4 Weeks Post-discharge
Number of sick visits related to apneic or apparent life-threatening events within second 4 weeks post-discharge
Time frame: 4 weeks through 8 weeks post-discharge
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within Second 4 Weeks Post-discharge | 0 count of apnea visits |
| Placebo | Number of Sick Visits Related to Apneic or Apparent Life-threatening Events Within Second 4 Weeks Post-discharge | 0 count of apnea visits |
Post-menstrual Age at Discharge
The post-menstrual age of the infant at discharge censored at 48 weeks PMA and at time of transfer or death
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEAN) |
|---|---|---|
| Caffeine | Post-menstrual Age at Discharge | 37.7 weeks |
| Placebo | Post-menstrual Age at Discharge | 37.6 weeks |
The Number of Days After Randomization Until Status That Infant Had at Least Two Consecutive Heart Rates >200 Documented at Least 3 Hours Apart
The number of days after randomization until status that infant had at least two consecutive heart rates \>200 documented at least 3 hours apart
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | The Number of Days After Randomization Until Status That Infant Had at Least Two Consecutive Heart Rates >200 Documented at Least 3 Hours Apart | 0 days |
| Placebo | The Number of Days After Randomization Until Status That Infant Had at Least Two Consecutive Heart Rates >200 Documented at Least 3 Hours Apart | 0 days |
The Number of Days to Apnea/ Bradycardia Free for 5 Consecutive Days
The number of days to apnea/ bradycardia free for 5 consecutive days. This outcome is censored at 48 weeks PMA
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | The Number of Days to Apnea/ Bradycardia Free for 5 Consecutive Days | 8 days |
| Placebo | The Number of Days to Apnea/ Bradycardia Free for 5 Consecutive Days | 11 days |
The Number of Days to Oral Feeds >140 ml/kg/Day or Growing on Less Than 140 ml/kg/Day for at Least 48 Hours
The number of days oral feeds \>140 ml/kg/day or growing on less than 140 ml/kg/day for at least 48 hours. This outcome is censored at 48 weeks PMA
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | The Number of Days to Oral Feeds >140 ml/kg/Day or Growing on Less Than 140 ml/kg/Day for at Least 48 Hours | 14 days |
| Placebo | The Number of Days to Oral Feeds >140 ml/kg/Day or Growing on Less Than 140 ml/kg/Day for at Least 48 Hours | 12 days |
The Number of Days to Physiologic Maturity After Randomization
The number of days to physiologic maturity after randomization. Physiologic maturity is defined: 1. Temperature: out of the incubator for at least 48 hours with normal body temperature; 2. Feeding: oral feeding at a volume of at least 140 ml/kg for 48 hours or growing on less than 140 ml/kg/day for at least 48 hours; 3. Respiratory: apnea-free for at least 5 consecutive days. This outcome is censored at 48 weeks PMA
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | The Number of Days to Physiologic Maturity After Randomization | 13 days |
| Placebo | The Number of Days to Physiologic Maturity After Randomization | 14 days |
The Number of Days to When Out of Incubator for 48 Hours: When Maintained Stable Temp for 48 Hrs
The number of days to when out of incubator for 48 hours: when maintained stable temp for 48 hrs. This outcome is censored at 48 weeks PMA
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | The Number of Days to When Out of Incubator for 48 Hours: When Maintained Stable Temp for 48 Hrs | 5 days |
| Placebo | The Number of Days to When Out of Incubator for 48 Hours: When Maintained Stable Temp for 48 Hrs | 5 days |
The Number of Episodes Between Randomization and Status That Infant Was Placed NPO for >= 24 Hours
The number of episodes between randomization and status that infant was placed NPO for \>= 24 hours
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Caffeine | The Number of Episodes Between Randomization and Status That Infant Was Placed NPO for >= 24 Hours | 0 episodes |
| Placebo | The Number of Episodes Between Randomization and Status That Infant Was Placed NPO for >= 24 Hours | 0 episodes |
Treatment for High Blood Pressure
Treatment for high blood pressure initiated after randomization until status.
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Category | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Caffeine | Treatment for High Blood Pressure | No | 412 Participants |
| Caffeine | Treatment for High Blood Pressure | Yes | 2 Participants |
| Placebo | Treatment for High Blood Pressure | No | 410 Participants |
| Placebo | Treatment for High Blood Pressure | Yes | 1 Participants |
Use of Anti-reflux Medications
The use of anti-reflux medications started between randomization and status
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Category | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| Caffeine | Use of Anti-reflux Medications | No | 384 Participants |
| Caffeine | Use of Anti-reflux Medications | Yes | 30 Participants |
| Placebo | Use of Anti-reflux Medications | No | 387 Participants |
| Placebo | Use of Anti-reflux Medications | Yes | 24 Participants |
Weight Gain From Randomization Until Status
Weight gain from randomization until status %(discharge up to 48 wks PMA, with censoring at time of transfer or death%).
Time frame: Randomization through hospital discharge, censored at time of transfer, death, or 48 wks PMA
Population: An intent-to-treat (ITT) analysis which included all infants participants who were randomized and who provided outcome data.
| Arm | Measure | Value (MEAN) |
|---|---|---|
| Caffeine | Weight Gain From Randomization Until Status | 28.9 grams per day |
| Placebo | Weight Gain From Randomization Until Status | 32.2 grams per day |