Table 2 Agreement, underestimation, overestimation, and kappa statistics of self-perceptions of weight compared to body fat as measured by bioelectric impedance (BIA) across residential settings at baseline

Agreement

43.20%

46.30%

37.30%

37.20%

46.50%

Underestimation

49.90%

43.70%

56.80%

55.80%

49.30%

Overestimation

6.90%

10.00%

6.00%

7.10%

4.30%

Kappa (95% CI)

0.16 (0.14–0.19)

0.18 (0.14–0.22)

0.10 (0.05–0.16)

0.08 (0.02–0.13)

0.19 (0.15–0.23)

Weighted agreement

78.70%

80.50%

76.50%

75.80%

79.70%

Weighted kappa (95% CI)

0.31 (0.29–0.33)

0.30 (0.27–0.34)

0.27 (0.23–0.31)

0.20 (0.15–0.25)

0.31 (0.27–0.34)