Table 2

Per cent change in weight and hemoglobin A1c from baseline at 6 and 12 months

Change in weightChange in hemoglobin A1c, NGSP % (mmol/mol)
6 months12 months6 months12 months
nMeanSDnMeanSDnMeanSDnMeanSD
Food security*
SecureMNT57−1.13.755−2.14.156−0.2 (2.5)1.0 (11.3)54−0.4 (3.9)1.3 (13.7)
LI122−5.15.3122−4.76.1120−0.6 (6.0)1.0 (11.5)122−0.3 (3.8)1.1 (12.4)
InsecureMNT9−1.33.39−0.93.89−0.5 (5.8)1.7 (18.6)8−0.5 (5.9)1.2 (13.4)
LI19−5.15.818−4.56.019−0.3 (3.6)0.8 (9.3)18−0.1 (1.5)0.7 (8.1)
Income†
<$30 000MNT17−1.03.516−1.13.617−0.2 (2.6)1.3 (14.3)16−0.3 (3.4)1.0 (11.1)
LI31−3.34.930−3.26.631−0.4 (4.4)0.7 (7.9)30−0.3 (2.8)0.8 (9.0)
$30 000–$50 000MNT3−1.81.43−1.61.33−0.1 (0.7)0.6 (6.4)30.0 (0.4)0.7 (7.4)
LI18−5.44.218−4.35.718−0.6 (6.5)1.0 (11.2)180.0 (0.1)1.2 (13.5)
$50 000–$100 000MNT17−1.23.517−2.23.5160.1 (1.2)1.0 (11.0)16−0.1 (1.4)1.1 (11.6)
LI50−5.45.851−5.05.748−0.6 (6.8)1.3 (13.7)51−0.6 (6.0)1.2 (12.8)
≥$100 000MNT26−0.94.325−1.94.626−0.4 (4.6)1.1 (12.3)25−0.5 (5.2)1.5 (16.1)
LI36−6.14.935−5.55.436−0.5 (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.