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Table 1 Characteristics of VA Patients with Diabetes by Continuity of Care in Primary Care Providera Type Assigned

From: Interpersonal continuity of primary care of veterans with diabetes: a cohort study using electronic health record data

Category

Switched Providers n = 146,500

Same Provider n = 509,868

Total n = 656,368

Patient-level factors

 Male

140,638 (96.0)

492,869 (96.7)

633,507 (96.5)

 Female

5862 (4.0)

16,999 (3.3)

22,861 (3.5)

Age Group

 Less Than 40

2052 (1.40)

4862 (0.95)

6914 (1.05)

 40 to Less Than 65

80,264 (54.8)

261,109 (51.2)

341,373 (52.0)

 65 to Less Than 80

52,682 (36.0)

196,840 (38.6)

249,522 (38.0)

 80 and Over

11,502 (7.85)

47,057 (9.23)

58,559 (8.92)

Race

 White

103,597 (70.7)

363,036 (71.2)

466,633 (71.1)

 American Indian

1289 (0.88)

3678 (0.72)

4967 (0.76)

 Asian

918 (0.63)

2832 (0.56)

3750 (0.57)

 Black

26,975 (18.4)

91,991 (18.0)

118,966 (18.1)

 Native Hawaiian

1599 (1.09)

5596 (1.10)

7195 (1.10)

 Unknown or Missing

12,122 (8.27)

42,735 (8.38)

54,857 (8.36)

 Hispanic

8561 (5.84)

24,157 (4.74)

32,718 (4.98)

Marital Status

 Currently Married

84,329 (57.6)

308,274 (60.5)

392,603 (59.8)

 Never Married

17,016 (11.6)

54,421 (10.7)

71,437 (10.9)

 Previously Married

44,772 (30.6)

145,689 (28.6)

190,461 (29.0)

 Unknown Marital Status

383 (0.26)

1484 (0.29)

1867 (0.28)

 Homeless at Any Time During Year

4549 (3.11)

8711 (1.71)

13,260 (2.02)

Copay Status

 No Copay Due to Disability

81,123 (55.4)

278,359 (54.6)

359,482 (54.8)

 No Copay Due to Low Income

40,864 (27.9)

133,272 (26.1)

174,136 (26.5)

 Must Pay Copay

22,502 (15.4)

91,157 (17.9)

113,659 (17.3)

 Copay Status Unknown

2011 (1.37)

7080 (1.39)

9091 (1.39)

Mental Health Diagnoses

 Mood Disorder

39,135 (26.7)

121,321 (23.8)

160,456 (24.4)

 Post-Traumatic Stress Disorder

22,683 (15.5)

72,896 (14.3)

95,579 (14.6)

 Dementia

4957 (3.38)

15,236 (2.99)

20,193 (3.08)

 Substance Abuse

13,689 (9.34)

38,160 (7.48)

51,849 (7.90)

 Other Mental Health Diagnosis

8782 (5.99)

30,004 (5.88)

38,786 (5.91)

Diagnostic Cost Group (DCG) Score Category

 Less Than or Equal to 0.5

69,654 (47.5)

260,010 (51.0)

329,664 (50.2)

 Greater Than 0.5 to 1

25,123 (17.1)

86,700 (17.0)

111,823 (17.0)

 Greater Than 1 to 1.5

19,313 (13.2)

64,932 (12.7)

84,245 (12.8)

 Greater Than 1.5 to 2

11,228 (7.66)

35,519 (6.97)

46,747 (7.12)

 Greater Than 2

21,182 (14.5)

62,707 (12.3)

83,889 (12.8)

Distance from VHA Primary Care Clinic

 Less Than 5 Miles

31,941 (21.8)

119,774 (23.5)

151,715 (23.1)

 5 to Less Than 25 Miles

71,412 (48.7)

265,553 (52.1)

336,965 (51.3)

 25 to Less Than 50 Miles

24,976 (17.0)

83,394 (16.4)

108,370 (16.5)

 50 Miles and Over

17,018 (11.6)

37,448 (7.34)

54,466 (8.30)

 Missing

1153 (0.79)

3699 (0.73)

4852 (0.74)

 Baseline BMI

 Less Than 18.5

363 (0.25)

1152 (0.23)

1515 (0.23)

 18.5 to Less Than 25

13,566 (9.26)

47,100 (9.24)

60,666 (9.24)

 25 to Less Than 30

42,293 (28.9)

149,814 (29.4)

192,107 (29.3)

 30 to Less Than 35

46,015 (31.4)

160,415 (31.5)

206,430 (31.5)

 35 and Above

44,263 (30.2)

151,387 (29.7)

195,650 (29.8)

Number of PC Visits

 1 PC Visit

39,830 (27.2)

103,854 (20.4)

143,684 (21.9)

 2 PC Visits

38,382 (26.2)

192,864 (37.8)

231,246 (35.2)

 3 PC Visits

32,305 (22.1)

104,846 (20.6)

137,151 (20.9)

 4 or More PC Visits

35,983 (24.6)

108,304 (21.2)

144,287 (22.0)

 Pharmacy Fill of Insulin

65,784 (44.9)

216,765 (42.5)

282,549 (43.0)

 Patient Had Same Zip Code in FY12 and FY13

127,158 (86.8)

478,420 (93.8)

605,578 (92.3)

Provider-level factors

 Assigned Provider Type in FY12

 Physician

104,395 (71.3)

394,959 (77.5)

499,354 (76.1)

 Nurse Practitioner

25,616 (17.5)

79,588 (15.6)

105,204 (16.0)

 Physician Assistant

10,185 (6.95)

30,798 (6.04)

40,983 (6.24)

 Physician Resident

6304 (4.30)

4523 (0.89)

10,827 (1.65)

Assigned Provider Type in FY13

 Physician

87,706 (59.9)

395,286 (77.5)

482,992 (73.6)

 Nurse Practitioner

20,564 (14.0)

79,464 (15.6)

100,028 (15.2)

 Physician Assistant

7178 (4.90)

30,716 (6.02)

37,894 (5.77)

 Physician Resident

5051 (3.45)

4402 (0.86)

9453 (1.44)

 Unable to Assign

26,001 (17.7)

 

26,001 (3.96)

 Provider Turnover from Station

24,512 (16.7)

8746 (1.72)

33,258 (5.07)

Facility-level factors

 Endocrinology Referral Capacityb

70,437 (48.1)

238,805 (46.8)

309,242 (47.1)

 Rural Urban Commuting Area Status

 Metropolitan Area Core

106,700 (72.8)

377,339 (74.0)

484,039 (73.7)

 Metropolitan Area Core - Remaining Levels

16,423 (11.2)

62,616 (12.3)

79,039 (12.0)

 Micropolitan Area Core

18,003 (12.3)

53,501 (10.5)

71,504 (10.9)

 Small Town or Rural

5374 (3.67)

16,412 (3.22)

21,786 (3.32)

State-level factors

 Percent of Primary Care Physicians Who Work With NPs/PAs

 Lowest Tertile

78,653 (53.7)

284,992 (55.9)

363,645 (55.4)

 Middle Tertile

38,373 (26.2)

133,094 (26.1)

171,467 (26.1)

 Highest Tertile

29,474 (20.1)

91,782 (18.0)

121,256 (18.5)

Nurse Practitioner Scope of Practice Regulations

 Least Restrictive

23,738 (16.2)

69,747 (13.7)

93,485 (14.2)

 Moderately Restrictive

22,697 (15.5)

79,056 (15.5)

101,753 (15.5)

 Most Restrictive

100,065 (68.3)

361,065 (70.8)

461,130 (70.3)

Physician Assistant Scope of Practice Regulations

 Least Restrictive

20,774 (14.2)

69,521 (13.6)

90,295 (13.8)

 Moderately Restrictive

36,532 (24.9)

113,202 (22.2)

149,734 (22.8)

 Most Restrictive

89,194 (60.9)

327,145 (64.2)

416,339 (63.4)

VISN-LEVEL factors

 Region

  Northeast

16,522 (11.3)

75,920 (14.9)

92,442 (14.1)

  West

32,865 (22.4)

91,014 (17.9)

123,879 (18.9)

  Midwest

31,983 (21.8)

116,774 (22.9)

148,757 (22.7)

  South

65,130 (44.5)

226,160 (44.4)

291,290 (44.4)

  1. Data for patient-level variables are from the Veterans Administration electronic health record files. Other data sources are described in the Methods section
  2. aPrimary care provider (PCP) is assigned as the physician, NP, or PA seen most during FY 2012 and 2013
  3. bEndocrinology referral capacity is defined as either present (endocrinology or other diabetes mellitus specialty clinics provided 500 or more visits to cohort patients in FY12) or absent (fewer than 500 visits to cohort patients)