J Clin Med Res

Journal of Clinical Medicine Research, ISSN 1918-3003 print, 1918-3011 online, Open Access

Article copyright, the authors; Journal compilation copyright, J Clin Med Res and Elmer Press Inc

Journal website http://www.jocmr.org

Letter to the Editor

Volume 7, Number 7, July 2015, pages 582-584

Current Status of the Screening of Chlamydia trachomatis Infection Among Japanese Pregnant Women

Tables

**Table 1.** Maternal Age Distribution Under the Three Chlamydia trachomatis (by Nucleic Acid Detection Tests With and Without Polymerase Chain Reaction and Antibody Detection Tests)
Maternal age (years)	PCR test		Nuclei acid tests except PCR		Antibody tests
Maternal age (years)	Number	(%)	Number	(%)	Number	(%)
PCR: polymerase chain reaction.
19	5,370	2.1	1,675	2.2	60	2.1
20 - 24	26,049	10.4	8,224	10.9	374	12.8
25 - 29	65,503	26.1	20,814	27.5	792	27.1
30 - 34	82,194	32.8	25,131	33.2	1,015	34.7
35 - 39	51,937	20.7	15,217	20.1	573	19.6
40	13,190	5.3	3,467	4.6	108	3.7
Total	250,571	100	75,795	100	2,922	100

**Table 2.** Prevalence of Chlamydia trachomatis Screening Tests (by Nucleic Acid Detection Tests With and Without Polymerase Chain Reaction and Antibody Detection Tests) of the Study Population by Age
Maternal age (years)	PCR test		Nuclei acid tests except PCR		Antibody tests
Maternal age (years)	Positive	Positive rate (%)	Positive	Positive rate (%)	Positive	Positive rate (%)
PCR: polymerase chain reaction. ^#P = 0.055 vs. values with CT nucleic acid detection PCR tests by the X² test. *P < 0.01 vs. values with CT nucleic acid detection PCR tests by the X² test.
19	854/5,370	15.9	272/1,675	16.2	15/60	25^#
20 - 24	1,953/26,049	7.5	556/8,224	8.0	66/374	18.2*
25 - 29	1,533/65,503	2.3	462/20,814	2.2	96/792	12.1*
30 - 34	965/82,194	1.2	347/25,131	1.4	99/1,015	9.8*
35 - 39	408/51,937	0.8	136/15,217	0.9	57/573	9.9*
40	129/13,190	1.0	31/3,467	0.9	15/108	13.4*
Total	5,880/250,571	2.3	18,07/75,795	2.4	348/2,922	11.9*