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Table 2 Top 20 most enriched codes for Spring. The top 20 most enriched codes for Spring. Enriched codes include allergies, sprains and strains, and sports related injury. We report by percent increase as well as -log(p). We compare the number of codes found in Spring to the average code counts of the other three seasons

From: Evaluation of the secondary use of electronic health records to detect seasonal, holiday-related, and rare events related to traumatic injury and poisoning

ICD 9 Code

Descriptions

Spring Code Counts

Average Count in Other Seasons

Percent Increase

P Value

Scores

840–848

Sprains and Strains of Joints and Adjacent Muscles

138,376

132,163.33

4.7

1.04E-66

151.93

995.3

Allergy, Unspecified

6304

5087

23.92

5.55E-61

138.74

990–995

Other and Unspecified Effects of External Causes

31,010

28,865

7.43

3.84E-36

81.55

905–909

Late Effects of Injuries, Poisonings, Toxic Effects, and Other External Causes

50,277

47,594

5.64

9.62E-35

78.33

995

Certain Adverse Effects not Elsewhere Classified

27,996

26,012

7.63

2.36E-34

77.43

980.9

Toxic Effect of Unspecified Alcohol

328

167.67

95.62

7.71E-28

62.43

844

Sprains and Strains of Knee and leg

18,141

16,806.33

7.94

1.71E-24

54.73

908.6

Late Effect of Certain Complications of Trauma

648

431

50.35

2.05E-22

49.94

E917.0

Striking Against or Struck Accidentally by Objects or Persons in Sports

2471

2020.33

22.31

3.06E-22

49.54

842

Sprains and Strains of Wrist and Hand

12,683

11,674.33

8.64

2.29E-20

45.22

848

Other and Ill-defined Sprains and Strains

16,380

15,278.67

7.21

8.61E-19

41.60

854

Intracranial Injury of Other and Unspecified Nature

17,691

16,558

6.84

2.01E-18

40.75

854

Without Mention of Open Intracranial Wound

17,515

16,401.67

6.79

5.34E-18

39.77

905

Late Effects of Musculoskeletal and Connective Tissue Injuries

23,970

22,703.33

5.58

4.87E-17

37.56

905.4

Late Effect of Fracture of Lower Extremities

9711

8915

8.93

7.21E-17

37.17

842.12

Sprain of Metacarpophalangeal (joint) of Hand

1659

1344.33

23.41

1.05E-16

36.79

842.1

Hand

5902

5296.67

11.43

2.50E-16

35.93

919.9

Other and Unspecified Superficial Injury of Other, Multiple, and Unspecified Sites, Infected

78

27.33

185.4

2.06E-15

33.82

854

Intracranial Injury of Other and Unspecified Nature Without Mention of Open Intracranial Wound, Unspecified State of Consciousness

13,228

12,381.67

6.84

3.94E-14

30.86

996

Complications Peculiar to Certain Specified Procedures

90,209

88,032.67

2.47

9.98E-14

29.94