Table 4.

Sexually transmitted infections diagnosed after assault among patients attending a sexual assault centre in Oslo, Norway

	Azithromycin prophylaxis recommended n/N (%)	Azithromycin prophylaxis not recommended n/N (%)	P value	Total n/N (%)
1. Positive test at primary examination within 2 days of assault. Infectious agents possibly deposited at assault.
Genital chlamydia	13/138 (9.4)	21/297 (7.1)	0.51	34/435 (7.8)
Mycoplasma genitalium	8/138 (5.8)	17/228 (7.5)	0.69	25/366 (6.8)
Gonorrhoea	0/142	4/304 (1.3)	0.31	4/446 (0.9)
Any of the above	19/142 (13.4)*	36/305 (11.8)*	0.75	55/447 (12.3)*
2. Positive test at primary examination 3–7 days after assault. Incubation period—infection probably from before assault.
Genital chlamydia	3/39 (7.7)	8/68 (11.8)	0.74	11/107 (10.3)
M. genitalium	1/38 (2.6)	4/55 (7.3)	0.65	5/93 (5.4)
Gonorrhoea	0/41	0/68	–	0/109
Any of the above	4/41 (9.8)	10/68 (14.7)*	0.65	14/109 (12.8)*
3. Positive test at primary examination 1–4 weeks after assault. Infection possibly from assault, manifest after incubation.
Genital chlamydia	1/18 (5.6)	3/36 (8.3)	1.00	4/54 (7.4)
M. genitalium	1/17 (5.9)	1/31 (3.2)	1.00	2/48 (4.2)
Gonorrhoea	0/19	0/37	–	0/56
Any of the above	2/19 (10.5)	3/37 (8.1)*	1.00	5/56 (8.9)*
4. Negative test at primary examination within a week of assault†, positive at follow-up. Infection possibly from assault.
Genital chlamydia	1/138 (0.7)	5/289 (1.7)	0.67	6/427 (1.4)
M. genitalium	2/139 (1.4)	7/222 (3.2)	0.49	9/361 (2.5)
Gonorrhoea	1/162 (0.6)	0/328	0.33	1/490 (0.2)
Any of the above	4/162 (2.5)	11/333 (3.3)*	0.78	15/495 (3.0)*

*Some patients were infected with more than one agent.

†Two days for gonorrhoea.