Table 2.

Sample Retention by Study Groups at Various Time Points

FTHPTSPTNPTSGATotal
Time points
 Discharge39 (100)32 (100)54 (100)34 (100)29 (100)188 (100)
 18 mo37 (95)27 (84)47 (87)28 (82)28 (97)167 (89)
 30 mo36 (92)27 (84)48 (89)30 (88)29 (100)170 (90)
 4 y39 (100)32 (100)53 (98)34 (100)29 (100)187 (99)
 8 y35 (90)28 (87)52 (96)31 (91)28 (97)174 (93)
Mean percent959194929994
  • Values are number (N) with percentage in parentheses.