Table 1. Patient characteristics and suicidal ideation as assessed by the PHQ9.
939,268 PHQ9s were completed by 297,290 patients. Question 9 of the PHQ9 asks about thoughts of being better off dead or of hurting oneself in some way over the last two weeks. Response options include “not at all” (Q9=0), “several days” (Q9=1), “more than half the days” (Q9=2), or “nearly every day” (Q9=3).
| Total Sample | PHQ9s | Q9=0 | Q9=1 | Q9=2 | Q9=3 |
|---|---|---|---|---|---|
| 939,268 | 748,040 | 122,716 | 41,055 | 27,457 | |
| (80%) | (13%) | (4%) | (3%) | ||
| Gender | |||||
| Male | 283,515 | 217,225 (77%) | 42,725 (15%) | 14,396 (5%) | 9,169 (3%) |
| Female | 655,753 | 530,815 (81%) | 79,991 (12%) | 26,659 (4%) | 18,288 (3%) |
| Age | |||||
| 18–29 | 156,977 | 122,423 (78%) | 22,554 (14%) | 7,422 (5%) | 4,578 (3%) |
| 30–44 | 252,863 | 203,294 (80%) | 32,047 (13%) | 10,656 (4%) | 6,866 (3%) |
| 45–64 | 378,649 | 297,273 (79%) | 51,650 (14%) | 17,765 (5%) | 11,961 (3%) |
| 65+ | 150,779 | 125,050 (83%) | 16,465 (11%) | 5,212 (3%) | 4,052 (3%) |
| Race/Ethnicity | |||||
| Non-Hispanic white | 694,378 | 556,681 (80%) | 89,881 (13%) | 28,829 (4%) | 18,987 (3%) |
| Asian | 27,090 | 20,455 (76%) | 4,242 (16%) | 1,526 (6%) | 867 (3%) |
| Non-Hispanic black | 52,372 | 40,361 (77%) | 6,901 (13%) | 3,018 (6%) | 2,092 (4%) |
| Hawaiian/Pacific Islander | 3,654 | 2,723 (75%) | 522 (14%) | 208 (6%) | 201 (6%) |
| Native American/ Alaskan Native | 13,272 | 10,307 (78%) | 1,763 (13 %) | 679 (5%) | 523 (4%) |
| Other, Mixed or Unknown | 59,141 | 44,746 (76%) | 9,107 (15%) | 3,178 (5%) | 2,110 (4%) |
| Hispanic | 89,361 | 72,767 (81%) | 10,300 (12%) | 3,617 (4%) | 2,677 (3%) |
| PHQ8 score | |||||
| 0–4 (minimal depression) | 265,547 | 255,108 (96%) | 8153 (3%) | 1350 (1%) | 936 (<1%) |
| 5–9 (mild depression) | 241,655 | 215,551 (89%) | 23,234 (10%) | 2220 (1%) | 650 (<1%) |
| 10–14 (moderate depression) | 203,482 | 155,630 (76%) | 36,758 (18%) | 8352 (4%) | 2742 (1%) |
| 15+ (moderately- severe to severe depression) | 228,584 | 121,751 (53%) | 54,571 (24%) | 29,133 (13%) | 23,129 (10%) |
| Visit Type | |||||
| Mental Health | 499,157 | 379,204 (76%) | 75,453 (15%) | 26,229 (5%) | 18,271 (4%) |
| Primary Care | 262,294 | 218,528 (83%) | 28,954 (11%) | 9,202 (4%) | 5,610 (2%) |
| Other | 177,817 | 150,308 (85%) | 18,309 (10%) | 5,624 (3%) | 3,576 (2%) |
| Charlson Score | |||||
| 0 | 583,688 | 469,153 (80%) | 74,874 (13%) | 23,865 (4%) | 15,796 (3%) |
| 1 | 154,940 | 122,410 (79%) | 20,531 (13%) | 7,339 (5%) | 4,660 (3%) |
| >1 | 148,423 | 116,718 (79%) | 19,436 (13%) | 7,132 (5%) | 5,137 (3%) |