Breast cancer diagnosis and staging in Chile: A non-randomized survey-based study to assess frequency and delays

Estudios originales

Published on 14 de octubre de 2024 | http://doi.org/10.5867/medwave.2024.09.2801

Breast cancer diagnosis and staging in Chile: A non-randomized survey-based study to assess frequency and delays

Amount of requested examinations []

		Amount of examinations¹(Min., Q1, Median, Q3, Max.)	Combination of exams requested in higher proportion²	Examinations perceived as most delayed³	Late stage⁴ (III to IV)
Sex	Male	5 - 5 - 5 - 5 - 5	[c1] [c2] Bx. Rx, CTc, US, CTap	Biopsy	0.00%
	Female	1 - 4 - 6 - 8 - 9	All	Biopsy	33.46%
	Unknown	6 - 6 - 7 -8 - 8	Bx, Rx, CTc, US, BS, BT	BS	50.00%
Age	29 to 40 years old	3 - 5 - 6 - 8 - 9	All	Biopsy	34.29%
	40 to 49 years old	1 - 4 - 6 - 7 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	BS	32.53%
	50 to 69 years old	1 - 4 - 6 - 8 -9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	35.66%
	70 to 83 years old	2 - 4 -7- 8,5 - 9	All	Biopsy	8.33%
	Unknown	2 - 4- 7 - 8,5 - 9	-	Biopsy	50.00%
Area of residence	Metropolitan region	1 - 4 - 6 - 8 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	34.35%
	Other	1 - 4 - 6 - 8 - 9	All	BS	32.31%
	Unknown	6 - 6 - 7 - 8 - 8	-	BS	50.00%
Net monthly income by quintiles	I	1 - 3 - 6 - 8 - 9	All	Biopsy	26.67%
	II	1 - 5 -7 - 8 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	BS	51.92%
	III	1 - 4,5 - 6 - 8 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	BS	36.54%
	IV	1 - 5 - 6 - 7 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	27.78%
	V	1 - 4 - 6 - 8 - 9	All	Biopsy	25.45%
	Unknown	4 - 4 - 5 - 9 - 9	All	Biopsy	20.00%
Educational level	Basic	1 - 4 - 6 - 7 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	CTc	42.86%
	High school	1 - 4 - 6 - 8 - 9	All	Biopsy	39.39%
	Higher education	1 - 5 - 6- 8 -9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	27.59%
	Unknown	2 - 3 - 6 - 7 - 8	-	Biopsy	60.00%
Health insurance	Public	1 - 4 - 6 - 8 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	34.22%
Health insurance	Private	1 - 5 - 7 - 8 -9	All	Biopsy	31.58%
Complementary health insurance	Does not have	1 - 4 - 6 - 8 - 9	Bx,Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	35.47%
	Does have	2 - 5 -7 - 8 - 9	All	Biopsy	27.38%
	Unknown	3 - 5 - 7 - 8 - 9	-	Biopsy	57.14%
Diagnostic stage	I to II	1 - 4 - 6 - 7 - 9	Bx, Rx, CTc, US, BS, CTap, MRI, BT	Biopsy	-
	III to IV	1 - 5 - 7 - 8 - 9	All	Biopsy	-
	Unknown	1 - 2 - 4 -7 - 9	Bx	Biopsy	-

BS, bone scintigram. BT., blood tests. Bx, biopsy.CI, confidence interval. CT, computed axial tomography. CTap, Abdominal and pelvic computed axial tomography. CTc, computed axial tomography of the chest. MRI, magnetic resonance imaging. Rx, chest radiograph. US, ultrasound.

Notes: ¹Descriptive measures, five-number summary, of the number of tests requested from each respondent, stratified according to sociodemographic characteristics and stage of diagnosis. ²According to sociodemographic characteristics and stage of diagnosis, the combination of tests most frequently reported by the corresponding group is indicated. ³According to sociodemographic characteristics and stage of diagnosis, the most frequently reported tests as "delayed" by each group. ⁴Percentage of respondents who reported being in late stages (stage III or IV) at the time of diagnosis according to sociodemographic characteristics.

Notes: Combination of most frequent examinations, most delayed examinations, staging of sociodemographic characteristics and stage of diagnosis.

Source: Prepared bu the authors.