Completeness, consistency, and duplicity of self-mutilation reports by adolescents in the Notifiable Diseases Information System: evaluation study, Santa Catarina, 2014-2023

Pinheiro, Thayse de Paula; Warmling, Deise; Hofelmann, Doroteia Aparecida; Coelho, Elza Berger Salema

doi:10.1590/S2237-96222026v35e20250412.en

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ORIGINAL ARTICLE • Epidemiol. Serv. Saúde 35 • 2026 • https://doi.org/10.1590/S2237-96222026v35e20250412.en linkcopy

This document is related to:

10.1590/S2237-96222026v35e20250412.a

This document is related to:

10.1590/S2237-96222026v35e20250412.b

Completeness, consistency, and duplicity of self-mutilation reports by adolescents in the Notifiable Diseases Information System: evaluation study, Santa Catarina, 2014-2023

Completitud, consistencia y duplicidad de los reportes de automutilación por adolescentes en el Sistema de Información de Enfermedades de Notificación Obligatoria: estudio de evaluación, Santa Catarina, 2014-2023

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Objective To evaluate the completeness, consistency, and duplicity of self-mutilation reports among adolescents in Santa Catarina, from 2014 to 2023.

Methods This study evaluated reports recorded in the Notifiable Diseases Information System (Sistema de Informação de Agravo de Notificação - SINAN). Completeness was assessed for 18 variables and classified as excellent (≥95.0%), good (90.0%–95.0%), fair (70.0%–90.0%), poor (50.0%–70.0%), and very poor (<50.0%). The consistency of seven variables was analyzed and classified into three categories: excellent (≥90.0%), fair (70.0%–89.0%), and low (<70.0%). Duplicity was checked using the variable “NDUPLIC_N” and by manual verification. Temporal trends were analyzed using Prais–Winsten regression, which classified them as stable, increasing, or decreasing.

Results A total of 1,403 self-mutilation reports were identified. Completeness was excellent for 12 variables and good for three. Sexual orientation (75.8%) and gender identity (76.2%) were rated fair, while motivation of violence (46.1%) was rated very poor. An increasing trend in completeness was observed for three variables. Consistency was excellent for six variables and fair for one, with an increasing trend in “sex of the person attended versus sex of the perpetrator,” a decreasing trend in “presence of disability or disorder vs. type,” and stability for the others. No duplicate records were found.

Conclusion The analyzed data showed good quality in the recording of self-mutilation among adolescents in SINAN of Santa Catarina. Strategies such as continuing education for health professionals and revisions to the reporting form are crucial for enhancing data quality and strengthening the planning of interventions to address this form of violence.

Keywords
Self Mutilation; Adolescent; Notification; Notifiable Diseases Information System; Evaluation Study

Variable 1	Versus	Variable 2
Number of participants (¹)	vs.	Sex of the perpetrator of the violence (male or female)
Self-inflicted violence (yes)	vs.	Relationship/degree of kinship with the person assisted (own person)
Relationship/degree of kinship with the person assisted	vs.	Own person
Sex of the probable perpetrator of the violence (female)	vs.	Sex of the person assisted (female)
Gender of the person assisted (male)	vs.	Sex of the likely perpetrator of violence (male)
Life stage of the likely perpetrator of violence (2-adolescent [10-19 years])	vs.	Age (10–19 years)
Report year	vs.	Approval date
Disability/disorder (yes)	vs.	Any type of disability noted

Check fields	2015	2016	2017	2018	2019	2020	2021	2022	2023	Total	C	Average annual change	Trend	p-value
n (%)	10 (0.7)	14 (1.0)	70 (5.0)	74 (5.3)	278 (19.8)	181 (12.9)	182 (13.0)	269 (19.2)	325 (23.2)	1,403 (100.0)
Sex	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	E^a	-	Not applicable
Race/skin color	90.0	92.9	92.9	90.5	96.0	99.4	98.9	97.4	99.4	97.4	E	1.19 (0.32; 2.06)	Increase	0.017
Education level	100.0	100.0	90.0	77.0-	92.4	81.8	95.6	94.1	91.7	90.8	B^b	0.22 (-3.22; 3.79)	Stability	0.885
Marital status	100.0	92.9	98.6	98.6	98.2	96.7	96.2	95.2	96.3	96.7	E	-0.08 (-0.61; 0.45)	Stability	0.724
Sexual orientation	30.0	71.4	82.9	60.8	77.0	76.8	86.3	75.8	72.0	75.8	R^c	0.94 (-2.98; 5.03)	Stability	0.596
Gender identity	60.0	78.6	81.4	67.6	80.2	86.2	67.6	71.0	77.5	76.2	R	-0.56 (-3.32; 2.26)	Stability	0.648
Municipality of occurrence	100.0	100.0	100.0	100.0	100.0	100.0	99.5	99.6	100.0	99.9	E	-0.04 (-0.10; 0.02)	Stability	0.176
Place of occurrence	100.0	100.0	98.6	97.3	98.6	97.8	97.3	98.1	98.5	98.1	E	-0.09 (-0.51; 0.33)	Stability	0.634
Number of individuals involved	100.0	92.9	100.0	100.0	99.6	98.9	99.5	98.9	98.8	99.1	E	0.37 (-0.16; 0.90)	Stability	0.150
Motivation for the violence	20.0	21.4	34.3	25.7	37.1	47.0	44.0	56.5	55.1	46.1	MR^d	14.15 (11.29; 17.08)	Increase	<0.001
Repeated violence	100.0	100.0	91.4	73.0	96.0	94.5	97.3	92.6	96.9	94.2	B	0.85 (-3.01; 4.88)	Stability	0.624
Alcohol use by the perpetrator	90.0	85.7	75.7	78.4	92.8	90.6	90.7	94.1	94.8	91.2	B	2.88 (0.22; 5.60)	Increase	0.042
Relationship (own person)	100.0	100.0	100.0	100.0	100.0	100.0	100.0	99.6	100.0	99.9	E	-0.02 (-0.05; 0.00)	Stability	0.060
Person sex	100.0	100.0	100.0	98.6	100.0	99.4	98.4	99.6	100.0	99.6	E	-0.05 (-0.25; 0.13)	Stability	0,512
Person’s life stage (adolescent)	100.0	92.9	98.6	100.0	100.0	98.3	97.3	99.3	100.0	99.1	E	0.45 (-0.13; 1.06)	Stability	0.120
Means of aggression: sharp object	100.0	100.0	100.0	100.0	100.0	99.4	100.0	100.0	100.0	99.9	E	-0.00 (-0.07; 0.06)	Stability	0.765
Means of aggression: blunt object	100.0	100.0	100.0	100.0	100.0	99.4	100.0	100.0	100.0	99.9	E	-0.00 (-0.07; 0.06)	Stability	0.765
Means of aggression: hot object	100.0	100.0	100.0	100.0	100.0	99.4	100.0	100.0	100.0	99.9	E	-0.00 (-0.07; 0.06)	Stability	0.765

Check fields	2015	2016	2017	2018	2019	2020	2021	2022	2023	Total	A	Average annual change	Trend	p-value
	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)
Number of individuals involved (¹) vs. sex of the perpetrator of the violence (male or female)	10/10 (100.0)	13/14 (92.9)	70/70 (100.0)	74/74 (100.0)	277/278 (99.6)	179/181 (98.9)	181/182 (99.5)	266/269 (98.9)	321/325 (98.8)	1,391/1,403 (91.1)	E^a	0.37 (-0.16; 0.90)	Stability	0.150
Self-inflicted violence (yes) vs. relationship/degree of kinship with the person assisted (own person)	10 (100.0)	13/14 (92.9)	70/70 (100.0)	74/74 (100.0)	278 (98.9)	181/181 (100.0)	181/182 (99.5)	265/269 (98.5)	322/325 (99.1)	1,391/1,403 (91.1)	E	0.38 (-0.14; 0.92)	Stability	0.136
Sex of the probable perpetrator of the violence (female) vs. sex of the person assisted (female)	8/9 (88.9)	14/14 (100.0)	50/52 (96.2)	57/59 (96.6)	221/228 (96.9)	133/136 (97.8)	145/152 (95.4)	227/230 (98.7)	265/272 (97.4)	1,120/1,152 (97.2)	E	0.10 (-0.11; 0.33)	Stability	0.298
Sex of the person assisted (male) vs. sex of the probable perpetrator of the violence (male)	1/1 (100.0)	-	18/20 (90.0)	15/16 (93.8)	50/57 (87.7)	45/46 (97.8)	30/34 (88.2)	39/41 (95.1)	53/60 (88.3)	251/275 (91.3)	E	40.68 (4.17; 89.99)	Increase	0.036
Life stage of the probable perpetrator of the violence (adolescent) vs. age (10–19 years)	9/10 (90.0)	12/14 (85.7)	69/70 (98.6)	71/74 (95.9)	254/278 (91.4)	164/181 (90.6)	167/182 (91.8)	251/269 (93.3)	311/325 (97.7)	1,308/1,403 (93.2)	E	0.57 (-1.00; 2.18)	Stability	0.424
Report date vs. closure date (must be equal)	8/10 (80.0)	12/14 (85.7)	61/70 (87.1)	43/74 (58.1)	209/278 (75.1)	151/181 (83.4)	128/182 (70.3)	178/269 (65.4)	259/325 (79.6)	147/1403 (74.6)	R^b	-1.74 (-5.59; 2.25)	Stability	0.336
Type of disability or disorder (at least one) vs. disability or disorder (yes)	5/5 (100.0)	7/7 (100.0)	35/36 (97.2)	22/22 (100.0)	69/72 (95.8)	45/47 (95.7)	37/39 (95.7)	67/71 (94.4)	121/123 (98.4)	408/422 (96.7)	E	-0.62 (-0.98; -0.25)	Decrease	0.007

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Secretaria de Vigilância em Saúde e Ambiente - Ministério da Saúde do Brasil SRTVN Quadra 701, Via W5 Norte, Lote D, Edifício P0700, CEP: 70719-040, +55 (61) 3315-3464 - Brasília - DF - Brazil
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[fnte2] ^aExcellent (≥95.0%); ^bGood (90.0% -95.0%); ^cFair (70.0% -90.0%); ^dVery poor (<50.0%).