Table 1.

Baseline demographic characteristics of participants and identified rheumatic heart disease cases

Characteristic	All surveyed participants (n=15 608)	Identified RHD cases (n=83)
Gender (%)
Male	15 048 (96.4)	79 (95.2)
Female	560 (3.6)	4 (4.8)
Age (%)*
18–29 years	3450 (22.2)	9 (10.8)
30–34 years	3410 (21.9)	9 (10.8)
35–39 years	3814 (24.5)	23 (27.7)
40–44 years	2839 (18.3)	15 (18.1)
45–68 years	2040 (13.1)	27 (32.5)
Mean±SD	36.3±7.4	41.3±8.6
Duration of employment at cohort enrolment (years) (median (IQR))†	9 (4)	10 (11)

*Information on date of birth was missing from 55 records.

†Information on duration of employment was missing from 29 records.

RHD, rheumatic heart disease.