# Count between session intervals in "sgdata"
count_intervals(data = sgdata,
id_var_name = "id",
sg_var_list = c("bdi_s1", "bdi_s2", "bdi_s3", "bdi_s4",
"bdi_s5", "bdi_s6", "bdi_s7", "bdi_s8",
"bdi_s9", "bdi_s10", "bdi_s11", "bdi_s12"))
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