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Table 3 Patient Health Questionnaire Depression Module (PHQ-9) by Age Category

From: Airplane pilot mental health and suicidal thoughts: a cross-sectional descriptive study via anonymous web-based survey

Over the last 2 weeks, how often have you been bothered by the following problems: Age <41 n (%) Age 41 to 50 n (%) Age 51 to 60 n (%) Age >60 n (%) Total n (%)
1) Little interest or pleasure in doing things? (n = 1812)a b
 Not at all 247 (50.6) 258 (52.6) 265 (59.4) 282 (72.9) 1052 (58.1)
 Several days 189 (38.7) 184 (37.5) 138 (30.9) 80 (20.7) 591 (32.6)
 More than half the days 39 (8.0) 33 (6.7) 21 (4.7) 17 (4.4) 110 (6.1)
 Nearly everyday 13 (2.7) 16 (3.3) 22 (4.9) 8 (2.1) 59 (3.3)
2) Feeling down, depressed, or hopeless? (n = 1800)a b
 Not at all 344 (70.8) 349 (71.1) 341 (76.8) 323 (85.2) 1357 (75.4)
 Several days 113 (23.3) 111 (22.6) 75 (16.9) 44 (11.6) 343 (19.1)
 More than half the days 22 (4.5) 24 (4.9) 17 (3.8) 7 (1.9) 70 (3.9)
 Nearly everyday 7 (1.4) 7 (1.4) 11 (2.5) 5 (1.3) 30 (1.7)
3) Trouble falling or staying asleep, or sleeping too much? (n = 1809)a b
 Not at all 100 (20.6) 109 (22.3) 122 (27.3) 219 (56.6) 550 (30.4)
 Several days 241 (49.6) 245 (50.1) 192 (43.0) 106 (27.4) 784 (43.3)
 More than half the days 95 (19.6) 85 (17.4) 83 (18.6) 34 (8.8) 297 (16.4)
 Nearly everyday 50 (10.3) 50 (10.2) 50 (11.2) 28 (7.2) 178 (9.8)
4) Feeling tired or having little energy? (n = 1806)a b
 Not at all 79 (16.2) 77 (15.8) 107 (23.9) 195 (51.2) 458 (25.4)
 Several days 267 (54.7) 261 (53.4) 231 (51.6) 141 (37.0) 900 (49.8)
 More than half the days 101 (20.7) 104 (21.3) 74 (16.5) 28 (7.4) 307 (17.0)
 Nearly everyday 41 (8.4) 47 (9.6) 36 (8.0) 17 (4.5) 141 (7.8)
5) Poor appetite or overeating? (n = 1805)a b
 Not at all 223 (46.0) 229 (46.9) 247 (55.3) 290 (75.3) 989 (54.8)
 Several days 158 (32.6) 163 (33.4) 137 (30.7) 69 (17.9) 527 (29.2)
 More than half the days 73 (15.1) 72 (14.8) 42 (9.4) 16 (4.2) 203 (11.3)
 Nearly everyday 31 (6.4) 24 (4.9) 21 (4.7) 10 (2.6) 86 (4.8)
6) Feeling bad about yourself – or that you are a failure or have let yourself or your family down? (n = 1811)a b
 Not at all 345 (70.7) 353 (72.0) 345 (77.4) 326 (84.2) 1369 (75.6)
 Several days 106 (21.7) 103 (21.0) 72 (16.1) 50 (12.9) 331 (18.3)
 More than half the days 30 (6.2) 23 (4.7) 16 (3.6) 6 (1.6) 75 (4.1)
 Nearly everyday 7 (1.4) 11 (2.2) 13 (2.9) 5 (1.3) 36 (2.0)
7) Trouble concentrating on things, such as reading the newspaper or watching TV? (n = 1803)a b
 Not at all 305 (62.5) 287 (58.5) 304 (68.3) 305 (80.5) 1201 (66.6)
 Several days 149 (30.5) 167 (34.0) 107 (24.0) 62 (16.4) 485 (26.9)
 More than half the days 24 (4.9) 29 (5.9) 18 (4.0) 7 (1.9) 78 (4.3)
 Nearly everyday 10 (2.1) 8 (1.6) 16 (3.6) 5 (1.3) 39 (2.2)
8) Moving or speaking so slowly that other people could have noticed? Or the opposite – being so fidgety or restless that you have been moving around a lot more than usual? (n = 1810)a b
 Not at all 414 (84.8) 407 (83.1) 390 (87.8) 357 (92.0) 1568 (86.6)
 Several days 56 (11.5) 66 (13.5) 33 (7.4) 23 (5.9) 178 (9.8)
 More than half the days 14 (2.9) 13 (2.7) 12 (2.7) 7 (1.8) 46 (2.5)
 Nearly everyday 4 (0.8) 4 (0.8) 9 (2.0) 1 (0.3) 18 (1.0)
9) Thoughts that you would be better off dead or of hurting yourself in some way? (n = 1798)
 Not at all 469 (96.1) 468 (95.7) 426 (96.0) 360 (95.5) 1723 (95.8)
 Several days 13 (2.7) 16 (3.3) 13 (2.9) 14 (3.7) 56 (3.1)
 More than half the days 4 (0.8) 3 (0.6) 1 (0.2) 1 (0.3) 9 (0.5)
 Nearly everyday 2 (0.4) 2 (0.4) 4 (0.9) 2 (0.5) 10 (0.6)
Median PHQ-9 total score (IQR) n 4 (2–8) 489 4 (2–7) 491 3 (2–7) 449 1 (0–4) 389 3 (2–7) 1848
How difficult have these problems made it for you to do your work, take care of things at home, or get along with people? (n = 1812)a b
 Not at all 269 (55.1) 262 (53.5) 282 (62.8) 306 (79.5) 1119 (61.8)
 Somewhat 199 (40.8) 207 (42.2) 139 (31.0) 70 (18.2) 615 (33.9)
 Very 17 (3.5) 16 (3.3) 17 (3.8) 5 (1.3) 55 (3.0)
 Extremely 3 (0.6) 5 (1.0) 11 (2.5) 4 (1.0) 23 (1.3)
  1. aTwo-sided Chi-square or Fisher’s Exact Test p-value < 0.05
  2. bNon-parametric test for trend of item scores across age groups, p-value < 0.05