Table 4 LBP in a Danish general population at ages 44/45 (survey 2) and at 48/49 (survey 3)
Number of days with LBP in the preceding year at survey 2 (n = 348) | Number of days with LBP in the preceding year at survey 3 in relation to survey 2 (N = 293 participants +119 non-responders) % [95% CI] | |||
|---|---|---|---|---|
0 | 1-30 | >30 | Non-responders | |
(n = 72) | (n = 152) | (n = 69) | (n = 55) | |
0 (n = 112) | 38 [29–47] | 35 [26–44] | 8 [3–13] | 20 [13–17] |
1-30 (n = 146) | 16 [10–22] | 58 [50–66] | 16 [10–22] | 14 [8–20] |
>30 (n = 90) | 8 [2–14] | 31 [21–41] | 40 [30–50] | 19 [13–29] |