The impact of sociodemographic factors on the utilization of radiation therapy in breast cancer patients in Estonia: a register-based study

Table 1 Characteristics of women with breast cancer and receipt of radiation therapy, Estonia 2007–2018

			Receipt of radiation therapy
			Yes		No
Variable	No.	%	No.	row%	No.	row%	p-value^a
Total	8637	100	4310	49.9	4327	50.1
Microscopically verified	8387	97.1	4305	51.3	4082	48.7	<0.001
Period of diagnosis
2007–2009	1939	22.5	758	39.1	1181	60.9	<0.001
2010–2012	2144	24.8	1041	48.6	1103	51.5
2013–2015	2218	25.7	1158	52.2	1060	47.8
2016–2018	2336	27.1	1353	57.9	983	42.1
Age at diagnosis (years)
<50	1523	17.6	943	61.9	580	38.1	<0.001
50–59	1993	23.1	1297	65.1	696	34.9
60–69	2057	23.8	1230	59.8	827	40.2
≥70	3064	35.5	840	27.4	2224	72.6
TNM stage
I	2483	28.8	1642	66.1	841	33.9	<0.001
II	3238	37.5	1531	47.3	1707	52.7
III	1574	18.2	839	53.3	735	46.7
IV	718	8.3	82	11.4	636	88.6
Unknown	624	7.2	216	34.6	408	65.4
Nationality
Estonian	5490	63.6	2753	50.2	2737	49.9	0.163
Other nationalities	3112	36.0	1545	49.7	1567	50.4
Unknown	35	0.4	12	34.3	23	65.7
Region of residence
North	4010	46.4	1991	49.7	2019	50.4	<0.001
West	927	10.7	420	45.3	507	54.7
Central	704	8.2	347	49.3	357	50.7
North-East	1077	12.5	518	48.1	559	51.9
South	1919	22.2	1034	53.9	885	46.1
Educational level
University degree	1964	22.7	1139	58.0	825	42.0	<0.001
Secondary plus vocational studies	1860	21.5	1079	58.0	781	42.0
Secondary studies	2593	30.0	1345	51.8	1248	48.1
Basic and primary studies	1410	16.3	406	28.8	1004	71.2
Unknown	810	9.4	341	42.1	469	57.9
Marital Status
Married	3035	35.1	1818	59.9	1217	40.1	<0.001
Divorced/widow	4389	50.8	1898	43.2	2491	56.8
Single	976	11.3	488	50.0	488	50.0
Unknown	237	2.7	106	44.7	131	55.3
Primary surgical treatment
Yes	7075	81.9	4230	59.8	2845	40.2	<0.001
No	1562	18.1	80	5.1	1482	94.9	<0.001
Chemotherapy
Yes	5518	63.9	3147	57.0	2371	43.0	<0.001
No	3119	36.1	1163	37.3	1965	62.7	<0.001

ISSN: 1475-9276