Colorectal cancer patients’ outcome in correlation with dietary and nutritional status: a systematic review

Figures & data

Figure 1. Preferred reporting items for systematic reviews.

Table 1. Characteristics of inclusion studies.

No	First Author (Year)	Year	Country	Study Design	Sample size	Mean Age/range	Exposure	Outcome
1	Shiao	2018	United states	Case control study	106 participants	54	Healthy eating practices	Progression of colorectal cancer
2	Kurk	2019	Netherlands	Cohort study	625 participants	65.8	Body mass index (BMI) and Skeletal muscle index (SMI)	Colorectal cancer progression
3	Barrubes	2018	Spain	Cohort study	7447 participants	Male: 55–80; Female: 60–80	Dairy product	Risk of colorectal cancer
4	Formica	2021	Rome	Cohort study	173 participants	44–88	Body mass index (BMI)	Quality of life patients with colorectal cancer
5	Lee	2020	Seoul	Cohort study	3449 participants	65 years	Body mass index (BMI)	Colorectal cancer reccurence and survival
6	Lin	2017	China	Randomized Controlled Trial	110 participants	52.61	Healthy diet	Progression of colorectal cancer
7	Guinter	2020	Canada	Cohort study	2498 participants	69.9	Body mass index (BMI)	Colorectal cancer incidence
							Healthy diet	Progression of colorectal cancer
8	Gathirua-Mwangi	2017	Spain	Cross sectional study	4500 participants	57.3	Body mass index (BMI) and waist circumference (WC)	Risk of having an advanced colorectal neoplasia (AN)
9	Mehta (2017)	2017	United States	Cohort study	3260 participants	Male: 40–75; Female:30–55	Western and prudent dietary patterns	Risk of Colorectal cancer
10	Gigic	2018	United States	Cohort study	192 participants	62	Western diet, fruit & vegetable diet, bread & butter diet, and high-carb diet	Quality of life of patients with colorectal cancer
11	Feliciano	2017	United States	Cohort study	2290 participants	50–79	Body mass index (BMI)	Colorectal cancer incidence
12	Fruge	2021	United States	Randomized Controlled Trial	50 participants	48	Green leafy vegetables (GLV) diet	Risk of colorectal cancer
13	Obon-Santacana	2019	Spain	Case control study	1852 participants	66.8	Pro-inflammatory diet	Risk of colorectal cancer
14	Wesselink	2021	Netherlands	Cohort study	1478 participants	66.2	Habitual dietary intake	Colorectal cancer reccurrence
15	Lopez-Rodriguez-Arias	2021	Spain	Randomized Controlled Trial	156 participants	69.5	Postoperative suplementation periOlimel N4-E	Postoperative complication and length of hospital stay Postoperative colorectal cancer complications and length of hospital stay
							Body mass index (BMI) and Skeletal muscle index (SMI)
16	Alegria-Lertxundi	2020	Spain	Case control study	308 participants	61.5	Food group consumption and diet quality	Colorectal cancer incidence
17	Baar	2020	Netherlands	Cohort study	1988 participants	Male: 68; Female: 67.8	Skeletal muscle index (SMI), subcutaneus and visceral adipose tissue	Colorectal cancer mortality

Table 2. Quality assessment result using Newcastle-Ottawa Scale.

Study	S				C	E/O			SUM
	1	2	3	4	1	1	2	3
Shiao (2018)	*	*	0	*	**	0	*	*	7
Kurk (2019)	*	*	*	*	**	*	*	–	8
Barrubes (2018)	*	*	*	*	–	*	*	–	6
Formica (2021)	–	–	–	*	**	*	*	*	6
Lee (2020)	*	*	*	*	–	*	*	–	6
Guinter (2020)	*	*	–	*	**	*	*	*	8
Gathirua-Mwangi (2017)	*	*	0	0	0	*	*	0	4
Mehta (2017)	*	*	–	*	*	*	*	–	6
Gigic (2018)	*	*	–	*	*	*	*	–	6
Feliciano (2017)	*	*	*	*	*	*	*	–	7
Obon-Santacana (2018)	*	*	0	*	**	0	*	0	6
Wesselink (2021)	*	*	–	*	*	*	*	–	6
Alegria-Lertxundi (2020)	*	*	*	*	**	0	*	0	7
Baar (2020)	*	*	*	*	*	*	*	–	7

Figure 2. Quality assessment result using Cochrane risk of bias tools.

Data availability statement

The authors confirm that the data supporting the findings of this study are available within the article.