Table 4.

Sexual behaviours of bisexually active MSM sex workers (prospective diary study, Coastal Kenya, 2007).

	Penetrative intercourse						Condomless penetrative intercourse				Condomless sex frequency (male vs. female)		Condomless event probability (male vs. female)
	Male partners		Female partners		Sex frequency (male vs. female)		Male partners		Female partners
	N	Rate	N	Rate	IRR† (95% CI)	P	N (%)	Rate	N (%)	Rate	IRR† (95% CI)	P	OR‡ (95% CI)	P
Total	642	9.1	340	4.8	1.83 (1.39–2.40)	***	183 (28.5)	2.6	147 (43.2)	2.1	0.93 (0.61–1.42)		0.48 (0.37–0.61)	***
Transaction
Partner paid	572	8.1	216	3.1	2.57 (1.87–3.53)	***	157 (27.4)	2.2	91 (42.1)	1.3	1.48 (0.89–2.44)		0.49 (0.36–0.65)	***
Participant paid	15	0.2	50	0.7	0.29 (0.14–0.60)	**	2 (13.3)	<0.1	22 (44.0)	0.3	0.09 (0.02–0.39)	**	0.16 (0.05–0.66)	*
Nontransactional	55	0.8	74	1.1	0.93 (0.52–1.66)		24 (43.6)	0.3	34 (45.9)	0.5	0.72 (0.34–1.55)		0.93 (0.48–1.76)
Relationship type
Regular	76	1.1	79	1.1	1.16 (0.68–1.98)		27 (35.5)	0.4	37 (46.8)	0.5	0.80 (0.41–1.58)		0.19 (0.11–0.34)	***
Casual – recurrent	199	2.8	117	1.7	1.75 (1.19–2.60)	**	54 (27.1)	0.8	55 (47.0)	0.8	0.90 (0.52–1.56)		0.44 (0.28–0.70)	**
Casual – new	367	5.2	144	2.1	2.21 (1.55–3.14)	***	102 (27.8)	1.5	55 (38.2)	0.8	1.62 (1.00–2.62)	*	0.53 (0.37–0.77)	**
Intercourse type
IAI	467	6.6	173	2.5	2.74 (1.95–3.84)	***	146 (31.3)	2.1	75 (43.4)	1.1	1.67 (1.00–2.78)	*	0.54 (0.41–0.71)	***
RAI	243	3.5	•	•			42 (17.3)	0.6	•	•
Vaginal	•	•	303	4.3			•	•	117 (38.6)	1.7

N, number of intercourse events; Rate, average count per 4 weeks person-observation.

^*P < 0.05.

^**P < 0.01.

^***P < 0.001.

^†Crude incidence rate ratio of male and female event counts using generalized estimating equation on paired individual data with a negative binomial link function and exchangeable correlation matrix.

^‡Crude odds ratio using generalized estimation equations on paired individual data with a logit link function and exchangeable correlation matrix.