Research Article

Population-Based Estimates of Physical Activity for Adults with Type 2 Diabetes: A Cautionary Tale of Potential Confounding by Weight Status

Table 4

(a) Comparison of agreement between Kcal method and Met mins method across BMI categories.

Met mins
Body mass index 2525–30 30
Inactive (%)Active (%)Inactive (%)Active (%)Inactive (%)Active (%)

Kcal
 Inactive206 (60.4)36 (10.6)361 (63.3)39 (6.8)506 (71.9)23 (3.3)
 Active0 (0)99 (29.0)1 (0.1) 169 (29.7)16 (2.2)159 (22.6)

Kappa = 0.77 ( )Kappa = 0.84 ( )Kappa = 0.85 ( )

(b) Comparison of agreement between Kcal method and MVPA mins method across BMI categories.

MVPA mins
Body mass index 2525–30 30
Inactive (%)Active (%)Inactive (%)Active (%)Inactive (%)Active (%)

Kcal
 Inactive220 (64.5)22(6.5)385 (67.5)15 (2.6)521(74.0)8 (1.1)
 Active6 (1.8)93 (27.3)4 (0.7) 166 (29.1)27 (3.8)148 (21.0)

Kappa = 0.81 ( )Kappa = 0.92 ( )Kappa = 0.86 ( )

(c) Comparison of agreement between MVPA mins method and Met mins method across BMI categories.

Met mins
Body mass index 2525–30 30
Inactive (%)Active (%)Inactive (%)Active (%)Inactive (%)Active (%)

MVPA mins
 Inactive206 (60.4)20 (5.9)362 (63.5)27 (4.7)522 (74.1)26 (3.7)
 Active0 (0)115 (33.7)0 (0) 181 (31.8)0 (0)156 (22.2)

Kappa = 0.87 ( )Kappa = 0.90 ( )Kappa = 0.90 ( )