Describing numerical variables: which are the most appropriate parameters to describe the data?*

Duquia, Rodrigo Pereira; González-Chica, David Alejandro; Bastos, João Luiz; Martínez-Mesa, Jeovany; Bonamigo, Renan Rangel

doi:10.1590/abd1806-4841.20174904

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Special Article • An. Bras. Dermatol. 92 (6) • Nov-Dec 2017 • https://doi.org/10.1590/abd1806-4841.20174904 copy

Describing numerical variables: which are the most appropriate parameters to describe the data?^* * Study conducted at Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA) - Porto Alegre - RS, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract:

The proper description of numerical variables is very important when presenting a set of data. Measures of central tendency and dispersion are used to adequately understand a set of numerical variables. Knowledge of the properties of these measures and their adequate use provide the reader with a better understanding of the results of a study.

Keywords:
Analytical epidemiology; Epidemiology; Epidemiology, descriptive

User number	ALT values	CRP values
1	30	5
2	25	4
3	45	38
4	35	2
5	40	10
6	40	6
7	45	16
8	30	4
9	25	4
10	25	1
11	30	3
12	30	5
13	35	7
14	18	1
15	20	3
16	25	3
17	30	4
18	20	3
19	35	5
20	35	6

	Ranking of the users of both medications
Test		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
Individual	Alanine aminotransferase (ALT)	18	20	20	25	25	25	25	30	30	30	30	30	35	35	35	35	40
test values	C-reactive protein (CRP)	1	1	2	3	3	3	3	4	4	4	4	5	5	5	6	6	7

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E-mail: revista@sbd.org.br

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[1] Mailing address: Rodrigo Pereira Duquia, Rua Independência, 172 - sala 902, Centro 90035-070 Porto Alegre, RS, Brazil. E-mail: rodrigoduquia@gmail.com

User number	ALT values	CRP values
1	30	5
2	25	4
3	45	38
4	35	2
5	40	10
6	40	6
7	45	16
8	30	4
9	25	4
10	25	1
11	30	3
12	30	5
13	35	7
14	18	1
15	20	3
16	25	3
17	30	4
18	20	3
19	35	5
20	35	6

User number	ALT values	CRP values
1	30	5
2	25	4
3	45	38
4	35	2
5	40	10
6	40	6
7	45	16
8	30	4
9	25	4
10	25	1
11	30	3
12	30	5
13	35	7
14	18	1
15	20	3
16	25	3
17	30	4
18	20	3
19	35	5
20	35	6

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Describing numerical variables: which are the most appropriate parameters to describe the data?* * Study conducted at Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA) - Porto Alegre - RS, Brazil.

Abstract:

Describing numerical variables: which are the most appropriate parameters to describe the data?^* * Study conducted at Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA) - Porto Alegre - RS, Brazil.

User number	ALT values	CRP values
1	30	5
2	25	4
3	45	38
4	35	2
5	40	10
6	40	6
7	45	16
8	30	4
9	25	4
10	25	1
11	30	3
12	30	5
13	35	7
14	18	1
15	20	3
16	25	3
17	30	4
18	20	3
19	35	5
20	35	6