Skip to main content

Table 2 Data extraction

From: Correlation between patients’ reasons for encounters/health problems and population density in Japan: a systematic review of observational studies coded by the International Classification of Health Problems in Primary Care (ICHPPC) and the International Classification of Primary care (ICPC)

Data

Remarks

Year of publication

 

Author

 

Setting

The categories of setting are based on description in each included study

Study period

 

Number of facilities

 

Total number of patients

 

Total number of encounters

 

Total number of RFEs

 

Total number of health problems

Proportion of “non-internal medicine-related”

RFEs in the top 20 RFEs

Proportion of “non-internal medicine-related”

health problems in the top 20 health problems

Classification

ICHPPC/ICHPPC/ICHPPC-2-Defined

 

ICPC/ICPC2

Primary outcome measures

RFEs (first visit, periodic visit)/health problems (acute, chronic)

Distinction between acute and chronic

Quality of coding

Prospective or retrospective

 

Single or multiple evaluator

 

Description of coding training

Prospective or retrospective

Number of evaluators

 
  1. RFEs: reasons for encounters
  2. ICHPPC: International Classification of Health Problems in Primary Care
  3. ICPC: International Classification of Primary Care