Table 1.

Criteria applied to obtain final sample.

Criteria Applied	MDS Item	Remaining Records	Remaining Persons
Full MDS 2011 dataset	N/A	16,326,279	2,774,778
Entry Date after 2011	A1600 ≥ 2011	12,762,711	2,249,588
SNF assessments only	A0200 = 1	12,762,711	2,249,588
Admission entry only	A1700 = 1	9,231,454	2,036,637
Age ≥65	Age calculated based on A0900	9,214,013	2,035,834
Admission assessment	A0310A = 01	1,849,734	1,527,246
First assessment	A0310E = 1	1,640,495	1,378,727
Residents not comatose	B0100 = 0	1,638,416	1,377,202
Residents who should be interviewed with PAT	F0300 = 1	1,548,357	1,310,983
Residents who were the primary respondent on the PAT	F0600 = 1	1,425,446	1,214,412
Residents who should be interviewed with the BIMS	C0100 = 1	1,381,897	1,181,181
Residents able to complete the BIMS	C0500 ≠ 99	1,357,775	1,162,126
Residents who should be interviewed with the PHQ9	D0100 = 1	1,342,704	1,150,630
Residents able to complete the PHQ9	D0300 ≠ 99	1,334,523	1,144,194
Residents who had a single admission record	N/A	985,954	985,954
Residents assessed between Oct–Dec 2011	Oct 01 2011 ≤ A1600 ≤ Dec 31 2011	244,718	244,718