Print Intervention Characteristics/Basic Study Process: Each participant took one placebo and a 24 hour-dose of sustained-release morphine daily, 12 hours apart. For one week participants took the active dose in the morning; for one week they took the active dose in the evening.
Arlington is a principal city in the U.S. state of Texas, located in Tarrant County. It is part of the Mid-Cities region of the DallasâFort WorthâArlington metropolitan area, approximately 12 miles (19 km) east of downtown Fort Worth and 20 miles (32 km) west of downtown Dallas.
The 2016 Dallas-Fort Worth-Arlington Metro Area, Texas, population is 7,102,800. There are 766 people per square mile (population density). The median age is 34.1. The US median is 37.4. 53.15% of people in Dallas-Fort Worth-Arlington Metro Area, Texas, are married.