Table 3.
| Least-Squares Mean (95% CI)**** | ||||||||
|---|---|---|---|---|---|---|---|---|
| Change from baseline | P value***** | |||||||
| Baseline | 6 months | 12 months | 18 months | 24 months | Group | Time | Group × Time | |
| Sedentary (% of monitor wear time***) | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 64.2 (61.9, 66.5) | −3.8 (−5.8, −1.8) | −0.3 (−2.4, 1.8) | −3.4 (−5.6, −1.2) | −2 (−4.3, 0.3) | |||
| EBWI group | 64.2 (62, 66.5) | −0.4 (−2.4, 1.6) | 2.9 (0.8, 5) | −0.9 (−3.1, 1.4) | −0.5 (−2.8, 1.8) | |||
| Difference | −3.4 (−6.3, −0.5) | −3.2 (−6.2, −0.3) | −2.5 (−5.7, 0.6) | −1.5 (−4.8, 1.7) | ||||
| Sedentary (hr/day) | >0.99 | <0.001 | >0.99 | |||||
| SBWI group | 8.9 (8.6, 9.2) | −0.5 (−0.8, −0.2) | −0.1 (−0.4, 0.2) | −0.5 (−0.9, −0.2) | −0.3 (−0.7, 0) | |||
| EBWI group | 8.9 (8.6, 9.2) | −0.1 (−0.4, 0.2) | 0.3 (0, 0.6) | −0.2 (−0.5, 0.2) | 0 (−0.4, 0.3) | |||
| Difference | −0.4 (−0.8, 0) | −0.4 (−0.9, 0) | −0.4 (−0.8, 0.1) | −0.3 (−0.8, 0.2) | ||||
| LPA (min/week) | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 1587.4 (1488.4, 1686.4) | 179.6 (83.9, 275.3) | 14.3 (−84.6, 113.2) | 177.3 (72.7, 281.9) | 82.4 (−25.8, 190.6) | |||
| EBWI group | 1566.7 (1467.7, 1665.6) | 60.8 (−34.9, 156.6) | −76.7 (−175.9, 22.4) | 97 (−9.2, 203.2) | 49.5 (−58.3, 157.4) | |||
| Difference | 118.8 (−16.6, 254.2) | 91 (−49, 231.1) | 80.3 (−68.7, 229.4) | 32.8 (−120, 185.6) | ||||
| Total MVPA (min/week) | >0.99 | 0.10 | 0.89 | |||||
| SBWI group | 520.5 (461.2, 579.7) | 68.4 (16.4, 120.5) | 8.8 (−45, 62.5) | 31.6 (−25.3, 88.5) | 35.5 (−23.3, 94.3) | |||
| EBWI group | 527.6 (468.4, 586.8) | −30.2 (−82.2, 21.9) | −78.4 (−132.4, −24.5) | −24.1 (−81.9, 33.6) | 5.5 (−53.2, 64.1) | |||
| Difference | 98.6 (25, 172.2) | 87.2 (11, 163.3) | 55.7 (−25.3, 136.8) | 30 (−53.1, 113.1) | ||||
| Total MVPA (MET-min/wk) | >0.99 | 0.10 | >0.99 | |||||
| SBWI group | 1959.9 (1728.1, 2191.6) | 221.3 (15.1, 427.5) | 13.4 (−199.7, 226.4) | 106.3 (−119, 331.5) | 124 (−109.1, 357.1) | |||
| EBWI group | 1974.4 (1742.9, 2206) | −133 (−339.3, 73.3) | −306.3 (−520, −92.7) | −100.8 (−329.6, 128) | 14.5 (−217.9, 247) | |||
| Difference | 354.3 (62.7, 645.9) | 319.7 (18, 621.4) | 207.1 (−114, 528.2) | 109.5 (−219.7, 438.6) | ||||
| >10 minute sessions of MVPA (min/week) | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 158.9 (117.8, 199.9) | 189.1 (149.9, 228.4) | 126.3 (85.8, 166.8) | 147.1 (104.3, 189.9) | 134.3 (90, 178.6) | |||
| EBWI group | 174.6 (133.6, 215.5) | 113.1 (73.9, 152.4) | 66.5 (25.9, 107.1) | 105.8 (62.4, 149.3) | 107.6 (63.4, 151.8) | |||
| Difference | 76 (20.5, 131.5) | 59.8 (2.5, 117.2) | 41.2 (−19.8, 102.3) | 26.7 (−35.9, 89.2) | ||||
| >10 minute sessions of MVPA (MET-min/week) | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 724.4 (537.5, 911.4) | 790.7 (612.8, 968.6) | 547.3 (363.5, 731.1) | 629.7 (435.4, 824) | 572.8 (371.8, 773.8) | |||
| EBWI group | 778.6 (591.7, 965.4) | 494 (316, 671.9) | 280 (95.7, 464.2) | 448.5 (251.1, 645.8) | 460.9 (260.4, 661.3) | |||
| Difference | 296.7 (45.1, 548.3) | 267.4 (7.1, 527.6) | 181.2 (−95.7, 458.1) | 111.9 (−171.9, 395.8) | ||||
| Total calories (kcal/day) | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 1987.1 (1872.6, 2101.6) | −450.6 (−551.8, −349.4) | −444.9 (−549.3, −340.5) | −330.6 (−439.6, −221.5) | −374.4 (−487.8, −260.9) | |||
| EBWI group | 2006.3 (1892.8, 2119.7) | −542.4 (−641.9, −443) | −484.6 (−589, −380.2) | −500 (−608.8, −391.1) | −543.7 (−656.7, −430.7) | |||
| Difference | 91.9 (−50, 233.7) | 39.7 (−107.9, 187.4) | 169.4 (15.4, 323.5) | 169.3 (9.2, 329.4) | ||||
| % calories carbohydrates | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 47.8 (46.6, 49.1) | 2.8 (1.6, 3.9) | 2.5 (1.3, 3.6) | 0.9 (−0.3, 2.1) | 0.2 (−1.1, 1.5) | |||
| EBWI group | 47.9 (46.7, 49.1) | 2.5 (1.4, 3.6) | 1.7 (0.5, 2.9) | 0.4 (−0.9, 1.6) | −0.4 (−1.7, 0.8) | |||
| Difference | 0.3 (−1.3, 1.9) | 0.8 (−0.9, 2.4) | 0.5 (−1.2, 2.3) | 0.7 (−1.2, 2.5) | ||||
| % calories protein | >0.99 | <0.001 | >0.99 | |||||
| SBWI group | 15.5 (15, 16) | 0.7 (0.2, 1.2) | 0.4 (−0.1, 0.9) | 0.3 (−0.2, 0.9) | 0.5 (0, 1) | |||
| EBWI group | 15.5 (15, 16) | 0.8 (0.4, 1.3) | 0.5 (0, 1) | 0.6 (0.1, 1.1) | 0.9 (0.4, 1.5) | |||
| Difference | −0.1 (−0.8, 0.6) | 0 (−0.7, 0.7) | −0.3 (−1, 0.5) | −0.4 (−1.2, 0.3) | ||||
| % calories fat | >0.99 | <0.0001 | >0.99 | |||||
| SBWI group | 35.7 (34.6, 36.8) | −3.7 (−4.7, −2.7) | −2.7 (−3.7, −1.7) | −1.6 (−2.6, −0.6) | −0.2 (−1.3, 0.9) | |||
| EBWI group | 35.3 (34.2, 36.4) | −3.1 (−4, −2.1) | −1.6 (−2.6, −0.6) | −0.8 (−1.8, 0.2) | −0.4 (−1.4, 0.7) | |||
| Difference | −0.6 (−2, 0.7) | −1.1 (−2.5, 0.3) | −0.8 (−2.3, 0.6) | 0.2 (−1.4, 1.7) | ||||
MET: metabolic equivalent; LPA: light-intensity physical activity (1.5 to <3.0 METs); MVPA: moderate-to-vigorous physical activity (≥3.0 METs).
*
Based on data from objective assessment of physical activity for a 1 week period.
**
Based on data from the Diet History Questionnaire
***
Monitor wear time defined as the time that the device was worn per day.
****
Model includes group (fixed), recruitment period (random), time (categorical, fixed), race (fixed), sex (fixed), time and group interaction (fixed), time and recruitment period (random).
*****
P-values are adjusted for multiple outcomes using Holm’s approach