Sum of symptom FREQuencies (PHQ9) e1a2-e1i2

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This variable is contained in the following files:

SAS Name

PHQ9_SUM

PHQ-9 TOTAL: Add values from E1a2, E1b2, E1c2, E1d2, E1e2, E1f2, E1g2, E1h2, E1i2 and E1j2