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. 2024 Jul 17;24:292. doi: 10.1186/s12886-024-03541-3

Table 1.

Demographic and socio-economic characteristics of retinoblastoma (RB) patients related to first visit to RB tertiary care unit, Lady Ridgeway Hospital (LRH), based on the medical records (MR) at LRH and telephone survey (TS)

1 A. Demographic & socioeconomic features obtained from clinical records at LRH during first visit
Variable Frequency          
01. Age (months) of RB patients
a. Total sample ( N  = 171)
00–10 61 (35.7%)
11–20 51 (29.8%)
21–30 23 (13.4%)
31–40 14 (08.2%)
> 41 22 (12.9%)
b. Unilateral cases ( n  = 120; 70.2%)
00–10 29 (24.2%)
11–20 38 (31.7%)
21–30 18 (15.0%)
31–40 13 (10.8%)
> 41 22 (18.3%)
c. Bilateral cases ( n  = 51; 29.8%)
00–10 32 (62.7%)
11–20 13 (25.5%)
21–30 05 (09.8%)
31–40 01 (02.0%)
≥ 41 00 (00.0%)
02. Gender ( N  = 171;100%)
Male 82 (48.0%)
Female 89 (52.0%)
03. Residential area of patients by province ( N  = 171;100%)
Western 59 (34.5%)
Southern 22 (12.9%)
Sabaragamuwa 17 (09.9%)
North Western 15 (08.8%)
Central 15 (08.8%)
North Central 09 (05.3%)
Uva 16 (09.4%)
Eastern 10 (05.8%)
Northern 08 (04.7%)
1 B. Demographic and socioeconomic characteristics obtained from TS
Variable Frequency 
(N = 90)
4. Ethnicity
Sinhala 69 (76.7%)
Tamil 10 (11.1%)
Moor 11 (12.2%)
5. Parental age (years) at birth of index child
Father
15–20 01 (01.1%)
21–30 19 (21.1%)
31–40 65 (72.2%)
41–50 05 (05.6%)
Mother
15–20 03 (03.3%)
21–30 55 (61.1%)
31–40 32 (35.6%)
41–50 00 (00.0%)
6 Parents’ educational status
a. Father
Below General Certificate of Education (GCE) Ordinary level 14 (15.6%)
Passed GCE Ordinary level 51 (56.7%)
Passed GCE Advanced level 20 (22.2%)
Tertiary education 05 (05.6%)
b. Mother
Below GCE Ordinary level 10 (11.1%)
Passed GCE Ordinary level 41 (45.6%)
Passed GCE Advanced Level 26 (28.9%)
Tertiary Education 13 (14.4%)
7. Parents’ Occupation #
a. Father
Unemployed 02 (02.2%)
Skill level 1 07 (07.8%)
Skill level 2 60 (66.7%)
Skill levels 3 and 4 16 (17.8%)
Armed forces 05 (05.6%)
b. Mother
Unemployed/ Homemakers 72 (80.0%)
Skill level 1 06 (06.7%)
Skill level 2 06 (06.7%)
Skill levels 3 and 4 06 (06.7%)
Armed forces 00 (00.0%)
8. Total family income per month (Rupees)
≤ 10,000 07 (07.8%)
10,001–20,000 24 (26.7%)
20,001–30,000 17 (18.9%)
30,001–50,000 17 (18.9%)
>Rs. 50,000 25 (27.8%)
9. Receiving financial assistance
Yes 19 (21.1%)
No 71 (78.9%)
10. Distance (km) from residence to LRH
≤ 1 02 (02.2%)
1.1–5 04 (04.4%)
5.1–10 27 (30.0%)
10.1–50 16 (17.8%)
> 50 41 (45.6%)

#Occupations categorized according to international standard classification of occupation (ISCO-88) of the International Labour Organization: Skill level 1 - Elementary occupations; Skill level 2 - clerks, service workers and shop and market sales workers, skilled agricultural and fishery workers, craft and related trades workers, plant and machine operators and assemblers; Skill levels 3 & 4 - legislators, senior officials and managers, professionals, technicians and associate professionals