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Table 2 Stepped-wedge design

From: Study protocol: a pragmatic, stepped-wedge trial of tailored support for implementing social determinants of health documentation/action in community health centers, with realist evaluation

Study step Study months
1–6 7–12 13–18 19–24 25–30 31–36 37–42 43–48 49–54
Wedge 1 (CHCs 1–5) C C, BL I FU FU FU FU FU FU
Wedge 2 (CHCs 6–10) C C C, BL I FU FU FU FU FU
Wedge 3 (CHCs 11–15) C C C C, BL I FU FU FU FU
Wedge 4 (CHCs 16–20) C C C C C, BL I FU FU FU
Wedge 5 (CHCs 21–25) C C C C C C, BL I FU FU
Wedge 6 (CHCs 26–30) C C C C C C C, BL I FU
  1. C, control period; I, intervention period; BL, baseline survey; FU, follow-up