Table 2

Selected sociodemographic, lifestyle, sexual and reproductive characteristics of the cohort at baseline and first follow-up stratified according to HIV status

	Cohort profile at baseline				Cohort profile at first follow-up
	Total (n=4043)		HIV negative (n=3325 to 82%)		Total (n=3074)		HIV positive* (n=552; 18.0%)		HIV negative (n=2522; 82.0%)
	N	%	N	%	N	%	N	%	N	%
Age (years)
25–29	527	13.0	484	14.6	344	11.2	26	4.7	318	12.6
30–34	599	14.8	521	15.7	432	14.1	61	11.1	371	14.7
35–39	744	18.4	580	17.5	547	17.8	121	21.9	426	16.9
40–44	787	19.5	638	19.2	634	20.6	115	20.8	519	20.6
45–49	667	16.5	529	15.9	522	17.0	112	20.3	410	16.7
50–60	716	17.7	571	17.2	595	19.4	117	21.2	478	18.9
Missing	3	0.1	2	0.06	–	–	–	–	–	–
Marital status
Married	2790	69.0	2434	73.6	2159	70.2	288	52.2	1871	74.2
Cohabiting	58	1.4	44	1.3	44	1.4	11	2.0	33	1.3
Single	487	12.0	377	11.4	335	10.9	76	13.8	259	10.3
Divorced/widow	687	17.0	451	13.6	527	17.1	176	31.9	351	13.9
Missing	21	0.5	19	0.57	9	0.3	1	0.2	8	0.3
BMI
Underweight	96	2.4	69	2.1	73	2.4	21	3.8	52	2.1
Normal	1149	28.4	880	27.3	839	27.3	199	36.1	640	25.4
Overweight	2190	54.2	1856	57.6	1695	55.1	259	46.9	1436	56.9
Obese	486	12.0	417	12.9	406	13.2	59	10.7	347	13.8
Missing	122	3.0	103	3.1	61	2.0	14	2.5	47	1.9
Education level
No formal education	126	3.1	94	2.8	89	2.9	23	4.2	66	2.6
Primary	2631	65.1	2127	64.1	2027	65.9	381	69.0	2027	65.3
Secondary	882	21.8	736	22.2	672	21.9	123	22.3	672	21.8
College	396	9.8	362	10.9	280	9.1	23	4.2	280	10.2
Missing	8	0.2	6	0.18	6	0.2	2	0.4	6	0.7
Religion
Christian	2708	67.0	2203	66.8	2064	67.1	391	70.8	1673	66.3
Muslim	1289	31.9	1083	32.8	978	31.8	155	28.1	823	32.6
Other	16	0.4	12	0.4	13	0.4	4	0.7	9	0.4
Missing	30	0.7	27	0.81	19	0.6	2	0.7	17	0.6
No. of living children
0	35	0.9	30	0.9	22	0.7	4	0.7	18	0.7
1–2	1506	37.2	1211	37.5	1112	36.2	219	39.7	893	35.4
3	901	22.3	721	22.3	729	23.7	141	25.5	588	23.2
4–6	1135	28.1	952	29.5	900	29.3	150	27.2	750	29.7
>7	139	3.4	120	3.7	99	3.2	12	2.2	87	3.5
Never been pregnant	221	5.5	197	6.1	144	4.7	16	2.9	128	5.1
Missing	106	2.6	94	2.83	68	2.2	10	1.8	58	2.3
Years living with partner
0–1	166	4.1	145	4.4	102	3.3	18	3.3	84	3.3
2–4	517	12.8	405	12.4	355	11.6	74	13.4	281	11.4
5–9	723	17.9	580	17.8	515	16.8	106	19.2	409	16.2
10–14	648	16.0	523	16.0	502	16.3	97	17.6	405	16.1
15–19	546	13.5	442	13.6	443	14.4	85	15.4	358	14.2
>20	1203	29.8	1041	31.9	993	32.2	137	24.8	856	33.9
Single with no regular partner	163	4.0	125	3.8	118	3.8	27	4.9	91	3.6
Missing	77	1.9	64	1.92	46	1.5	8	1.5	38	1.5
Sex in last 1 year
Yes	3399	84.1	2879	87.0	2583	84.0	404	73.2	2179	86.4
No	610	15.1	415	12.5	478	15.6	146	26.5	332	13.2
Never had sex	14	0.3	14	0.4	5	0.2	0	0.0	5	0.2
Missing	20	0.5	17	0.51	8	0.3	2	0.4	6	0.2
Condom use within last 12 months
No sex within last 12 months	610	15.1	415	12.6	478	15.6	146	26.5	332	13.2
At every intercourse	509	12.6	322	9.8	381	12.4	139	25.2	242	9.6
Rarely	204	5.0	175	5.3	146	4.8	25	4.5	121	4.8
No condom use	2678	66.2	2375	71.9	2052	66.8	239	43,3	1813	71.9
Never had sex	14	0.3	14	0.4	5	0.2	0	0.0	5	0.2
Missing	28	0.7	24	0.72	12	0.4	3	0.5	9	0.4
No. of lifetime partners
1	1476	36.5	1279	39.0	1129	36.7	158	28.6	971	38.5
2	1053	26.0	859	26.2	819	26.6	155	28.1	664	26.3
3	709	17.5	562	17.1	516	16.8	101	18.2	415	16.5
4	284	7.0	224	6.8	221	7.2	46	8.3	175	6.8
5–8	329	8.1	264	8.1	255	8.3	49	8.9	206	8.2
>9	113	2.8	75	2.3	89	2.9	33	6.0	56	2.2
Never had sex	14	0.3	14	0.4	5	0.2	0	0.0	5	0.2
Missing	65	1.6	48	1.4	40	1.3	10	1.8	30	1.2

*According to HIV status at baseline.
BMI, body mass index; HIV, human immunodefiency virus.