Table 2.
Characteristics of the study population before enrollment and 12 months after enrollment in the weight management programs
| Characteristic | Total N=1,138 | WMP N=153 | Weight Watchers N=439 | WalkingSpree N=432 | None N=114 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | Pre | Post | Pre | Post | Pre | Post | |
| BMI (kg/m2) | 38.3 ± 5.5 | 37.0 ± 5.8 | 40.4 ± 5.3 | 36.2 ± 6.1 | 39.3 ± 6.0 | 38.1 ± 6.4 | 36.4 ± 4.5 | 35.9 ± 4.6 | 38.6 ± 5.5 | 37.9 ± 6.6 |
| Systolic blood pressure (mmHg) (missing=4/0) | 126 ± 13 | 125 ± 12 | 126 ± 12 | 122 ± 12 | 126 ± 14 | 125 ± 13 | 125 ± 12 | 125 ± 12 | 127 ± 15 | 127 ± 12 |
| Diastolic blood pressure (mmHg) (missing=4/0) | 79 ± 8 | 78 ± 8 | 79 ± 9 | 75 ± 8 | 79 ± 8 | 78 ± 8 | 79 ± 8 | 78 ± 8 | 80 ± 9 | 80 ± 7 |
| HDL cholesterol (mg/dl) (missing=8/4) | 47 ± 13 | 47 ± 13 | 46 ± 13 | 47 ± 13 | 48 ± 13 | 48 ± 12 | 46 ± 13 | 47 ± 13 | 44 ± 12 | 45 ± 11 |
| Total cholesterol (mg/dl) (missing=10/13) | 184 ± 35 | 181 ± 36 | 183 ± 36 | 174 ± 37 | 184 ± 32 | 182 ± 32 | 183 ± 36 | 180 ± 36 | 191 ± 36 | 191 ± 40 |
| HbA1c (%)(missing=913/960) | 7.0 ± 1.6 | 6.7 ± 1.6 | 6.9 ± 1.1 | 6.3 ± 0.8 | 7.0 ± 1.8 | 6.5 ± 1.3 | 7.0 ± 1.6 | 6.7 ± 1.4 | 7.4 ± 2.1 | 7.9 ± 2.9 |
| Fasting glucose (mg/dl) (missing=486/704) | 98 ± 26 | 96 ± 19 | 103 ± 21 | 97 ± 14 | 96 ± 24 | 97 ± 23 | 96 ± 23 | 96 ± 16 | 106 ± 42 | 94 ± 16 |
| Treated depression (missing=294/46) | 54 (6%) | 75 (7%) | 7 (13%) | 14 (10%) | 30 (8%) | 33 (8%) | 16 (4%) | 17 (4%) | 1 (6%) | 11 (15%) |
| PMPM Cost* | ||||||||||
| Inpatient | $71 | $87 | $112 | $79 | $71 | $103 | $60 | $76 | $60 | $74 |
| Outpatient | $169 | $167 | $182 | $171 | $184 | $166 | $166 | $173 | $106 | $140 |
| Diagnostic testing | $37 | $51 | $60 | $41 | $43 | $62 | $26 | $39 | $28 | $64 |
| Laboratory testing | $15 | $14 | $15 | $13 | $17 | $14 | $14 | $12 | $18 | $17 |
| Emergency room | $25 | $24 | $19 | $30 | $28 | $20 | $25 | $21 | $22 | $45 |
| Pharmacy | $108 | $107 | $133 | $129 | $115 | $112 | $93 | $96 | $108 | $105 |
| Other | $21 | $57 | $24 | $119 | $30 | $74 | $12 | $29 | $15 | $12 |
| Total | $448 | $506 | $545 | $584 | $488 | $551 | $396 | $445 | $357 | $457 |
WMP = University of Michigan Weight Management Program
PMPM = per-member per-month
*
includes both plan and member costs
Missing=number missing pre/number missing post