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Table 2 Profile of characteristics for the nine study sites and 118 national sites

From: A method to reduce imbalance for site-level randomized stepped wedge implementation trial designs

Site characteristic

Median and range of sample (n = 9)

Median and range of VA facilities nationally (n = 118)

All-Employee Survey item on psychological safety

3.67 (3.55–3.83)

3.67 (3.36–3.97)

Number of BHIP teams previously established

4 (1–7)

3 (0–16)

Number of patients seen in general mental health clinics in the prior year

8351 (2239–26,115)

7976 (1477–29,166)

Percentage of primary care patients seen in integrated primary care/mental health teams

7.78% (2.03%–12.79%)

7.24% (1.82%–13.20%)

Percentage of clinic visits conducted via telephone

18% (9%–29%)

16% (3%–87%)

VA geographic region, n (%)

 Region 1

0 (0%)

28 (23.73%)

 Region 2

3 (33.33%)

33 (27.97%)

 Region 3

3 (33.33%)

35 (29.66%)

 Region 4

3 (33.33%)

22 (18.64%)

Rural, n (%)

1 (11.11%)

20 (16.95%)

VA facility complexity, n (%)

 Complexity 1a (most complex)

1 (11.11%)

34 (28.81%)

 Complexity 1b

2 (22.22%)

18 (15.25%)

 Complexity 1c

3 (33.33%)

20 (16.95%)

 Complexity 2

1 (11.11%)

21 (17.80%)

 Complexity 3 (least complex)

2 (22.22%)

25 (21.19%)