Primary coding Perceived Stress Scale (PSS)

adds the following column to promext: ecu_six_ils1,ecu_six_ils2, ecu_six_ils3, ecu_six_ils4, ecu_six_ils5, ecu_six_ils6, ecu_six_ils_total, ecu_six_ils_cat

primary_coding_suep_pss(trial_data)

Arguments

trial_data

A secuTrial data object