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Table 1 Overview of general practice networks

From: Usefulness of primary care electronic networks to assess the incidence of chlamydia, diagnosed by general practitioners

 

AMC network

VUmc network

IPCI

LINH

Region

South-east Amsterdam

Amsterdam, Haarlem, Amstelveen

Nationwide

Nationwide

Year of data extraction

2007

2007

2005

2007

No of practices

5

21

81

81

Size of network population

35,137

66,402

235,307

327,725

Percentage of women

53%

53%

51%

51%

Patient characteristics

Lower socioeconomic status and more often non-western descent than the general population; living in an highly urbanized area

More often of Dutch descent; living in an highly urbanized area

Representative sample of the general population [21]

Representative sample of the general population [22]

Definition of chlamydia

A chlamydia diagnosis was based on laboratory results, appropriate antibiotics or correct ICPC code in the medical record

Idem, based on laboratory results, antibiotics and ICPC code

Idem, based on laboratory results, antibiotics and ICPC code

A chlamydia diagnosis was based on a specific ICPC sub-code or main-code combined with a chlamydia-related antibiotic

Overall incidence rate per 100,000 (95% CI)

590.2 (506.7 - 687.3)

275.4 (233.6 - 324.7)

103.2 (89.2 - 118.7)

195.9 (179.3 - 214.1)