Table 3.

Proportional Increase in Total Health Care Costs Across Strata Defined by Both BMI and PHQ Depression Score

	PHQ 0 to 4	PHQ 5 to 9	PHQ 10 or more
BMI <25	1.0 (reference)	1.46 (1.24 to 1.73)	1.79 (1.27 to 2.50)
BMI 25 to 30	1.09 (0.94 to 1.27)	2.10 (1.68 to 2.62)	2.20 (1.60 to 3.03)
BMI 30 to 35	1.34 (0.94 to 1.91)	1.84 (1.18 to 2.88)	2.66 (2.07 to 3.42)
BMI >35	1.72 (1.07 to 2.76)	4.14 (2.92 to 5.85)	3.90 (2.82 to 5.38)

Tabled values are proportional differences with 95% confidence intervals based on gamma regression with log link