Table 3.

Partial regression coefficients (β), crude and adjusted, between serum ferritin (γ) and red meat consumption (Xi) (times/d) in a population between 5 and 17 years of age, Colombia, ENSIN-2015

Variable	Crude			Adjusted difference
	β*	95 % CI	P	β†	95 % CI	P
Total	3⋅26	1⋅46, 5⋅07	0⋅001	2⋅99	1⋅18, 4⋅73
Sex
Male	4⋅52	1⋅90, 7⋅14	0⋅001	Ref	Ref	Ref
Female	1⋅92	−0⋅41, 4⋅24	0⋅104	−2⋅57	−5⋅92, 0⋅78	0⋅131
Age group (years)
Children (5–10)	3⋅05	0⋅05, 6⋅04	0⋅046	Ref	Ref	Ref
Adolescents (11–17)	3⋅44	1⋅03, 5⋅85	0⋅006	−0⋅23	−4⋅11, 3⋅67	0⋅908
Age (years)
5–8	3⋅74	0⋅60, 6⋅89	0⋅020	1⋅73	−2⋅63, 6⋅10	0⋅430
9–11	2⋅15	−1⋅54, 5⋅83	0⋅248	Ref	Ref	Ref
12–15	3⋅89	0⋅44, 7⋅34	0⋅028	1⋅26	−3⋅85, 6⋅37	0⋅624
16–17	2⋅53	−1⋅83, 6⋅88	0⋅250	−0⋅50	−6⋅01, 5⋅92	0⋅987
Stunted growth
No	3⋅36	1⋅48, 5⋅23	0⋅001	Ref	Ref	Ref
Yes (z < 2)	2⋅07	−3⋅22, 7⋅37	0⋅436	−1⋅44	−7⋅24, 4⋅35	0⋅620
Nutritional status (BMI)‡
No	2⋅71	0⋅75, 4⋅66	0⋅008	−2⋅80	−9⋅41, 3⋅80	0⋅399
Overweight (≥25 kg/m2)	4⋅94	−0⋅95, 10⋅83	0⋅098	Ref	Ref	Ref
Obese (≥30 kg/m2)	6⋅21	−2⋅22, 14⋅65	0⋅133	0⋅96	−9⋅78, 11⋅69	0⋅859
Food insecurity§
No	3⋅88	1⋅01, 6⋅74	0⋅009	0⋅58	−5⋅83, 6⋅99	0⋅857
Mild	1⋅75	−1⋅38, 4⋅89	0⋅267	−1⋅64	−7⋅65, 4⋅36	0⋅586
Moderate	4⋅20	−1⋅07, 9⋅47	0⋅116	Ref	Ref	Ref
Severe	3⋅10	−1⋅33, 7⋅52	0⋅165	−1⋅84	−8⋅99, 5⋅31	0⋅609
Wealth index
Q1 – the poorest	5⋅95	2⋅05, 9⋅84	0⋅004	4⋅59	−1⋅71, 10⋅89	0⋅151
Q2	2⋅98	0⋅16, 5⋅80	0⋅039	1⋅77	−3⋅75, 7⋅29	0⋅524
Q3	4⋅91	1⋅37, 8⋅44	0⋅008	3⋅39	−2⋅12, 8⋅90	0⋅223
Q4	1⋅19	−3⋅22, 5⋅60	0⋅588	Ref	Ref	Ref
Q5 – the richest	1⋅04	−3⋅65, 5⋅72	0⋅651	−0⋅25	−7⋅04, 6⋅54	0⋅942
Ethnicity
Mestizo	3⋅06	1⋅10, 5⋅02	0⋅003	−0⋅19	−6⋅73, 6⋅35	0⋅953
Black/Afro-descendant	4⋅23	−2⋅06, 10⋅53	0⋅170	−0⋅11	−9⋅05, 8⋅82	0⋅980
Indigenous	3⋅34	−3⋅89, 10⋅57	0⋅334	Ref	Ref	Ref
Area
Urban	2⋅19	−0⋅27, 4⋅65	0⋅080	Ref	Ref	Ref
Rural	4⋅89	2⋅11, 7⋅67	0⋅001	3⋅23	−0⋅53, 6⋅99	0⋅091
Region
Central	4⋅50	2⋅10, 6⋅89	0⋅001	1⋅34	−4⋅88, 7⋅56	0⋅669
Atlantic	1⋅56	−4⋅05, 7⋅17	0⋅558	−1⋅25	−9⋅00, 6⋅51	0⋅749
Eastern	2⋅84	−1⋅87, 7⋅56	0⋅218	−1⋅33	−8⋅50, 5⋅84	0⋅712
Pacific	−0⋅29	−4⋅81, 4⋅24	0⋅892	−3⋅41	−10⋅57, 3⋅74	0⋅344
Bogotá	−3⋅38	Nd	Nd	−6⋅45	−17⋅64, 4⋅74	0⋅253
Amazon	3⋅10	−4⋅38, 10⋅58	0⋅360	Ref	Ref	Ref

ENSIN-2015, Encuesta Nacional de la Situación Nutricional en Colombia-2015 (National Survey of the Nutritional Situation of Colombia-2015); Ref, reference; Q, quintile; Nd, no data.

^*Partial regression coefficient achieved in a simple linear regression model.

^†Partial regression coefficient achieved in a multiple linear regression model, where the dependent variable is the serum ferritin level (μ/l), and the main explanatory variable is the frequency/d of red meat consumption. The model was adjusted for sex, age, nutritional status, level of food insecurity in the household, wealth index, ethnicity, and geographical area and region.

^‡Based on BMI equivalents according to the International Obesity Task Force.

^§Based on the Latin American and Caribbean Food Security (ELCSA) Scale.