Table 1

Descriptive statistics of the studies identified in the literature search meeting inclusion criteria. Results are listed as number and percentage of the total, at both the study level and extracted patient level

	Study level		Individual level
	No of observations	% of total	No of individuals	% of total
Sex
Female	205	80.3	121 152	81.1
Male	38	14.9	16 178	10.8
Both	6	2.4	8946	6.0
Unknown	6	2.4	3154	2.1
Date of testing
Before 1985	8	3.1	2377	1.6
1985–90	28	11.0	26 419	17.7
1990–5	36	14.1	15 264	10.2
1995–2000	81	31.8	68 494	45.8
After 2000	51	20.0	25 224	16.9
Other	5	2.0	1175	0.8
Unknown	46	18.0	10 477	7.0
Diagnostic test
Nucleic acid amplification	84	32.9	73 368	49.1
Antigen	89	34.9	34 936	23.4
Culture	27	10.5	18 163	12.1
Mixture	20	7.8	11 433	7.7
Unknown	35	13.7	11 530	7.7
Specimen
Urine	75	29.4	31 064	20.8
Cervical/endocervical swab	99	38.8	36 090	24.2
Urethral swab	8	3.1	3036	2.0
Mixture	31	12.2	49 573	33.2
Other	2	0.8	3963	2.6
Unknown	40	15.7	25 704	17.2
Age group
<20 years	54	21.2	13 397	9.0
20–24 years	35	13.7	14 218	9.5
25–29 years	20	7.8	4120	2.7
30+ years	38	14.9	6917	4.6
Other	56	22.0	61 794	41.4
Unknown	52	20.4	48 984	32.8
Setting
GP surgery/community clinic	58	22.7	45 262	30.3
FPC	40	15.7	17 825	11.9
TOP clinic	34	13.3	9120	6.1
GUM clinic	45	17.7	40 001	26.8
Population based	16	6.3	4963	3.3
Youth clinic	8	3.1	1996	1.3
Antenatal clinic	12	4.7	1256	0.8
Other/mixed	42	16.5	29 007	19.5
Total	255		149 430