Table 4 Frequency of STI information identification. From left to right, the columns display the total number of records, the frequency of identified STI, and their corresponding proportions.

From: Privacy protection of sexually transmitted infections information from Chinese electronic medical records

EMRs sub-datasets

Visit number

STI frequency

Percentage (%)

Diagnosis

52,261,225

681,942

1.3

Surgery

2,275,548

437

0.02

Medication

20,602,753

10,311

0.05

Test & exam results

359,784,651

0

0

Admission records from medical records (NLP)

Disease history

16,742,579

73,725

0.4

Family history

7,400,955

13,136

0.2

Operation history

2,275,548

472

0.02

Toxic history

13,134,334

91

0.0007

Chief complaint

188,953

43

0.02

Allergy history

4,749,858

NA

NA

Alcohol and tobacco history

3,018,618

NA

NA

Marriage history

2,089,601

NA

NA