Table 2.

Association between childhood BMI with late-life depressive symptoms¹ in an Icelandic population (N = 889)

	Late-life depressive symptoms (cases/n)	Model 12			Model 23			Model 34
		Odds Ratio 95% CI		P-value	Odds Ratio 95% CI		P-value	Odds Ratio 95% CI		P-value
Continuous BMI
BMI age 8 (kg/m2)	69/664	0.99	(0.81–1.21)	0.91	0.98	(0.79–1.20)	0.81	0.97	(0.78–1.20)	0.76
BMI age 13 (kg/m2)	84/711	0.94	(0.84–1.06)	0.31	0.95	(0.85–1.07)	0.43	0.95	(0.83–1.07)	0.37
BMI categories
Normal or underweight age 8	66/641	1.00	(reference)		1.00	(reference)		1.00	(reference)
Obese or overweight age 8	3/23	1.12	(0.32–3.90)	0.86	0.95	(0.26–3.52)	0.94	0.95	(0.25–3.49)	0.93
Normal or underweight age 13	82/685	1.00	(reference)		1.00	(reference)		1.00	(reference)
Obese or overweight age 13	2/26	0.59	(0.14–2.53)	0.47	0.61	(0.13–2.72)	0.51	0.59	(0.13–2.65)	0.49

BMI Body mass index, GDS Geriatric depression scale, CI Confidence intervals.

¹ GDS score ≥ 5 measured at age ~ 75 y

² Model 1 = adjusted for sex

³ Model 2 = Model 1 + education, physical activity, smoking status and alcohol use at late-life

⁴ Model 3 = Model 2 + BMI at late-life