Table 1:

Factors associated with STI prevalence and incidence

		STI prevalence		STI incidence
	%	Adjusted Prevalence Odds Ratio (95% CI)	p-value	Adjusted hazard ratio (95% CI)	p-value
Age groups
<20 years old	10%	1.62 (1.39, 1.90)	<0.001	3.50 (2.85, 4.29)	<0.001
20-24 years old	35%	1.46 (1.29, 1.66)	<0.001	2.47 (2.08, 2.94)	<0.001
25-29 years old	22%	1.07 (0.92, 1.24)	0.3998	1.30 (1.05, 1.60)	0.014
30-34 years old	13%	0.85 (0.71, 1.24)	0.0830	0.98 (0.77, 1.24)	0.852
35+ years	20%	1
Education
None	54%	1.02 (0.91, 1.14)	0.7517	0.98 (0.71, 1.35)	0.861
Primary	42%	0.88 (0.78, 1.00)	0.335	0.98 (0.70, 1.36)	0.908
Secondary or more	4%	1		1
Age at sexual debut
<15 years old	6%	1.31 (0.96, 1.78)	0.0900	1.65 (1.06, 2.56)	0.026
15-19 years old	78%	1.24 (1.04, 1.51)	0.0175	1.48 (1.11, 1.96)	0.007
20+ years old	17%	1		1
Marital/cohabitation status
Married/cohabitating	23%	1		1
Single/not-cohabiting	77%	1.67 (1.44, 1.93)	<0.001	2.55 (2.16, 3.02)	<0.001
Number of sex partner(s)a
None/one	87%	1		1
Two or more	13%	1.26 (1.07, 1.49)	0.0048	1.52 (1.26, 1.83)	<0.001
Parity
None	11%	1.41 (1.16, 183)	<0.001	2.13 (1.69, 2.67)	<0.001
One child	44%	1.55 (1.34, 1.90)	<0.001	2.45 (2.05, 2.92)	<0.001
Two children	23%	1.17 (1.03, 1.43)	0.034	1.49 (1.21, 1.83)	<0.001
Three children	21%	1		1
Condom used in last sex
No	36%	1		1
Yes	64%	0.76 (0.55, 1.05)	0.0971	1.19 (1.05, 1.34)	0.005
Contraceptive used
None/other	20%	1		1
Condom	15%	1.01 (0.88, 1.16)	0.871	1.34 (1.11, 1.63)	0.003
Oral contraceptives	11%	0.79 (0.65, 0.94)	0.0101	0.85 (0.66, 1.08)	0.188
Injectables	53%	1.01 (0.91, 1.13)	0.861	1.51 (1.30, 1.75)	<0.001
STI diagnosis at baseline
No	82%	-	-	1
Yes	18%	-	-	2.81 (2.50, 3.16)	<0.001

^apast 3 months;