Table 3.

Group Participation by CIWL Maintenance*

Number of SessionsMultiple Regular GroupsAny Multiple GroupsAny Advanced Groups
AttendanceNMSDMSD%§%%
Outcome
 Maintained a CIWL9613.72a1.671.951.1145.461.2632.5b
 Did not maintain a CIWL8313.29a1.441.821.3149.562.148.1b
  • *Means having a common letter in the subscript differ significantly at or beyond the 0.05 level of confidence based on a t-test for independent group means. Percentages having a common letter in the subscript differ significantly at or beyond the 0.05 level of confidence based on a z-test for independent proportions.

  • Mean number of sessions attended.

  • Mean number of groups attended.

  • §Percent of individuals who participated.

  • Abbreviations: CIWL, clinically important weight loss; SD, Standard deviation.