Table 1.

Descriptive statistics of the study population by study variables

Exposure factor	Frequency	Per cent	Person time	Dead	Rate	95% CI
Gender
Female	63 042	52.9	310 556.33	58	18.7	14.4 to 24.2
Male	56 229	47.1	281 767.7	140	49.7	42.1 to 58.6
Total	119 271		592 324.03	198	33.4	29.1 to 38.4
Age group
1–14	50 515	42.4	254 938.5	40	15.7	11.5 to 21.4
15–34	41 195	34.5	192 014.21	55	28.6	22.0 to 37.3
35–64	19 480	16.3	102 645.01	48	46.8	35.2 to 62.1
65+	8 081	6.8	42 726.31	55	128.7	98.8 to 167.7
Total	119 271		592 324.03	198	33.4	29.1 to 38.4
Education
Primary	53 024	44.5	270 807.1	73	27.0	21.4 to 33.9
No-formal	60 588	50.8	293 677.2	118	40.2	33.6 to 48.1
Secondary	4878	4.1	24 250.0	4	16.5	6.2 to 44.0
Tertiary	757	0.6	3516.5	3	85.3	27.5 to 264.5
Total	119 247		592 250.83	198	33.4	29.08 to 38.4
Occupation
Student	4026	4.2	151 544.4	12	8.0	4.5 to 13.9
Unemployed	27 435	28.9	17 878.2	10	55.9	30.1 to 104.0
Retired	4399	4.6	12 098.2	33	272.8	193.9 to 383.7
Casual	17 377	18.3	74 459.5	46	61.8	46.3 to 82.5
Farming	35 505	37.3	181 796.8	74	40.7	32.4 to 51.1
Other	6333	6.7	128 472.2	23	17.9	11.9–26.9
Total	95 076		566 249.2	198	35.0	30.4 to 40.2
Household SES
High	15 989	30.0	78 611.6	23	29.3	19.4 to 44.0
Medium	18 418	34.5	91 127.64	38	41.7	30.3 to 57.3
Low	18 971	35.5	93 664.9	43	45.9	34.1 to 61.9
Total	53 378		263 404.14	104	39.5	32.58 to 47.9
Marital status
Single (>15 years)	20 675	18.6	102 676.6	30	29.2	20.43 to 41.8
Ever married	40 554	36.5	218 805.1	125	57.1	47.9 to 68.1
Single (<15 years)	49 950	44.9	2616 721.0	43	16.4	12.2 to 22.2
Total	111 179		583 153.6	198	33.4	29.1 to 38.4

SES, socioeconomic status.