Change in weight | Change in hemoglobin A1c, NGSP % (mmol/mol) | ||||||||||||
6 months | 12 months | 6 months | 12 months | ||||||||||
n | Mean | SD | n | Mean | SD | n | Mean | SD | n | Mean | SD | ||
Food security* | |||||||||||||
Secure | MNT | 57 | −1.1 | 3.7 | 55 | −2.1 | 4.1 | 56 | −0.2 (2.5) | 1.0 (11.3) | 54 | −0.4 (3.9) | 1.3 (13.7) |
LI | 122 | −5.1 | 5.3 | 122 | −4.7 | 6.1 | 120 | −0.6 (6.0) | 1.0 (11.5) | 122 | −0.3 (3.8) | 1.1 (12.4) | |
Insecure | MNT | 9 | −1.3 | 3.3 | 9 | −0.9 | 3.8 | 9 | −0.5 (5.8) | 1.7 (18.6) | 8 | −0.5 (5.9) | 1.2 (13.4) |
LI | 19 | −5.1 | 5.8 | 18 | −4.5 | 6.0 | 19 | −0.3 (3.6) | 0.8 (9.3) | 18 | −0.1 (1.5) | 0.7 (8.1) | |
Income† | |||||||||||||
<$30 000 | MNT | 17 | −1.0 | 3.5 | 16 | −1.1 | 3.6 | 17 | −0.2 (2.6) | 1.3 (14.3) | 16 | −0.3 (3.4) | 1.0 (11.1) |
LI | 31 | −3.3 | 4.9 | 30 | −3.2 | 6.6 | 31 | −0.4 (4.4) | 0.7 (7.9) | 30 | −0.3 (2.8) | 0.8 (9.0) | |
$30 000–$50 000 | MNT | 3 | −1.8 | 1.4 | 3 | −1.6 | 1.3 | 3 | −0.1 (0.7) | 0.6 (6.4) | 3 | 0.0 (0.4) | 0.7 (7.4) |
LI | 18 | −5.4 | 4.2 | 18 | −4.3 | 5.7 | 18 | −0.6 (6.5) | 1.0 (11.2) | 18 | 0.0 (0.1) | 1.2 (13.5) | |
$50 000–$100 000 | MNT | 17 | −1.2 | 3.5 | 17 | −2.2 | 3.5 | 16 | 0.1 (1.2) | 1.0 (11.0) | 16 | −0.1 (1.4) | 1.1 (11.6) |
LI | 50 | −5.4 | 5.8 | 51 | −5.0 | 5.7 | 48 | −0.6 (6.8) | 1.3 (13.7) | 51 | −0.6 (6.0) | 1.2 (12.8) | |
≥$100 000 | MNT | 26 | −0.9 | 4.3 | 25 | −1.9 | 4.6 | 26 | −0.4 (4.6) | 1.1 (12.3) | 25 | −0.5 (5.2) | 1.5 (16.1) |
LI | 36 | −6.1 | 4.9 | 35 | −5.5 | 5.4 | 36 | −0.5 (5.3) | 1.0 (11.0) | 35 | −0.3 (2.8) | 1.1 (12.2) |
*P value for food security by intervention interaction was 0.99 for weight change and 0.27 for HbA1c change in the model adjusted for age, gender, race/ethnicity, education, primary language, income, and health insurance.
†Participants (4.3%) who did not report income are excluded from these analyses; p value for income category by intervention interaction was 0.69 for weight change and 0.29 for HbA1c change in the model adjusted for age, gender, race/ethnicity, education, primary language, and health insurance.
HbA1c, hemoglobin A1c; LI, lifestyle intervention; MNT, medical nutrition therapy; NGSP, National Glycohemoglobin Standardization Program.