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. 2004 Jul 30;2:40. doi: 10.1186/1477-7525-2-40

Table 2.

Mean number of days adults felt sad, blue or depressed by HRQOL* and sex**

HRQOL variable Males Females Male & Females
N Mean 95% CI N Mean 95% CI N Mean 95% CI

Physically unhealthy days
0 days 48,188 1.7 1.6–1.8 63,192 2.6 2.5–2.7 111,380 2.2 2.0–2.3
1–2 days 6,792 2.3 2.1–2.5 10,855 3.0 2.8–3.2 17,647 2.6 2.5–2.8
3–13 days 6,371 3.6 3.4–3.9 12,631 4.6 4.4–4.8 19,002 4.2 4.1–4.4
14–29 days 1,959 5.9 5.3–6.5 4,614 7.5 7.0–8.0 6,573 6.9 6.5–7.3
30 days 3,539 8.1 7.3–8.8 6,207 9.3 8.6–9.9 9,746 8.7 8.3–9.2
all categories 66,849 2.4 2.3–2.5 97,499 3.5 3.4–3.6 164,348 3.0 2.9–3.1
Mentally unhealthy days
0 days 50,042 1.1 1.0–1.2 63,446 1.5 1.4–1.6 113,488 1.3 1.2–1.4
1–2 days 5,446 2.1 1.9–2.2 9,644 2.2 2.0–2.3 15,090 2.1 2.0–2.2
3–13 days 6,717 4.9 4.6–5.2 14,219 5.2 5.0–5.3 20,936 5.0 4.8–5.2
14–29 days 2,194 11.1 10.5–11.8 5,318 12.6 12.2–13.1 7,512 12.1 11.7–12.5
30 days 2,366 16.1 15.3–16.9 5,173 17.2 16.6–17.7 7,539 16.8 16.3–17.2
all categories 66,765 2.4 2.3–2.5 97,800 3.5 3.4–3.6 164,565 3.0 2.9–3.1
Unhealthy days+
0 days 38,831 0.9 0.8–1.0 45,983 1.3 1.2–1.4 84,814 1.1 1.0–1.2
1–2 days 7,675 1.4 1.3–1.5 11,093 1.5 1.4–1.6 18,768 1.5 1.4–1.6
3–13 days 10,963 2.9 2.8–3.0 20,785 3.4 3.3–3.5 31,748 3.2 3.1–3.5
14–29 days 3,344 6.7 6.3–7.2 7,935 7.7 7.4–8.0 11,279 7.4 7.1–7.6
30 days 5,446 10.7 10.2–11.3 10,678 12.4 12.1–12.8 16,124 11.7 11.4–12.1
all categories 66,259 2.4 2.3–2.5 96,474 3.5 3.4–3.6 162,733 3.0 2.9–3.1
Activity limitation days
0 days 56,202 1.7 1.6–1.8 77,711 2.6 2.5–2.7 133,913 2.1 2.0–2.2
1–2 days 3,556 2.5 2.2–2.7 6,446 3.3 3.1–3.5 10,002 3.0 2.8–3.1
3–13 days 3,462 5.3 4.9–5.7 7,169 6.6 6.3–6.9 10,631 6.1 5.8–6.4
14–29 days 1,305 10.2 9.4–11.0 2,887 11.8 11.2–12.5 4,192 11.2 10.7–11.7
30 days 1,962 12.3 11.3–13.4 3,204 13.6 12.7–14.5 5,166 13.0 12.2–13.7
all categories 66,487 2.4 2.3–2.5 97,417 3.5 3.4–3.6 163,904 3.0 2.9–3.1
Anxiety days
0 days 32,664 0.6 0.5–0.7 38,600 0.8 0.7–0.9 71,264 0.7 0.6–0.8
1–2 days 11,739 1.1 1.0–1.2 17,592 1.3 1.2–1.4 29,331 1.2 1.1–1.3
3–13 days 14,076 3.1 3.0–3.3 25,130 3.7 3.6–3.8 39,206 3.4 3.3–3.5
14–29 days 3,946 9.4 8.9–9.9 7,834 10.2 9.9–10.6 11,780 9.9 9.6–10.1
30 days 4,018 13.9 13.3–14.5 8,017 15.0 14.6–15.5 12,035 14.5 14.2–14.9
all categories 66,443 2.4 2.3–2.5 97,173 3.6 3.4–3.7 163,616 3.0 2.9–3.1
Pain days
0 days 52,475 1.7 1.6–1.8 72,697 2.6 2.5–2.7 125,172 2.2 2.0–2.2
1–2 days 4,421 2.6 2.3–2.8 7,143 3.5 3.3–3.8 11,564 3.1 2.9–3.3
3–13 days 4,815 3.8 3.6–4.1 8,598 5.5 5.2–5.8 13,413 4.8 4.5–5.0
14–29 days 1,762 6.8 6.1–7.4 3,642 8.6 8.1–9.2 5,405 7.9 7.4–8.3
30 days 3,363 9.1 8.3–9.9 5,612 10.3 9.6–11.0 8,975 9.7 9.2–10.3
all categories 66,836 2.4 2.3–2.5 97,692 3.6 3.4–3.7 164,528 3.0 2.9–3.1
Sleeplessness days
0 days 24,107 1.6 1.5–1.7 31,809 2.2 2.1–2.3 55,916 1.9 1.8–2.0
1–2 days 7,750 1.1 1.0–1.2 10,410 1.6 1.5–1.8 18,160 1.4 1.3–1.5
3–13 days 20,007 2.1 2.0–2.2 29,594 2.8 2.7–2.9 49,601 2.5 2.4–2.6
14–29 days 8,407 5.0 4.6–5.3 13,633 6.0 5.8–6.3 22,040 5.5 5.3–5.7
30 days 6,347 6.4 6.0–6.8 12,087 7.9 7.6–8.3 18,434 7.3 7.0–7.6
all categories 66,618 2.4 2.3–2.5 97,533 3.6 3.4–3.7 164,151 3.0 2.9–3.1
Vitality days
0 days 6,247 7.1 6.6–7.5 11,536 9.0 8.6–9.4 17,783 8.2 7.9–8.5
1–2 days 1,450 5.9 5.2–6.6 3,118 7.4 6.8–8.0 4,568 6.8 6.4–7.3
3–13 days 8,912 4.2 4.0–4.4 14,809 5.4 5.2–5.6 23,721 4.9 4.7–5.0
14–29 days 28,280 1.7 1.6–1.8 41,496 2.5 2.3–2.6 69,776 2.1 2.0–2.2
30 days 20,990 1.1 0.9–1.2 24,687 1.3 1.2–1.4 45,677 1.2 1.1–1.3
all categories 65,879 2.4 2.3–2.5 95,646 3.6 3.4–3.7 161,525 3.0 2.9–3.1

Note. *Health-Related Quality of Life (HRQOL) questions are: Now thinking about your physical health which includes physical illness and injury, for how many days in the past 30 days was your physical health not good?; Now thinking about your mental health which includes stress, depression, and problems with emotions, for how many days in the past 30 days was your mental health not good?; During the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation?; During the past 30 days, for about how many days did pain make it hard for you to do your usual activities, such as self-care, work, or recreation?; During the past 30 days, for about how many days have you felt worried, tense, or anxious?; During the past 30 days, for about how many days have you felt you did not get enough rest or sleep?; During the past 30 days, for about how many days have you felt very healthy and full of energy? **Behavioral Risk Factor Surveillance System; Selected U.S. states 1995–2000; all variables are age-adjusted. +A calculated measure which results from the sum of physically unhealthy days and mentally unhealthy days with a maximum of 30 unhealthy days for an individual.