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Table 2 Prevalence of analgesic use and change over time

From: Analgesic use in a Norwegian general population: change over time and high-risk use - The Tromsø Study

  Population OTC only Rx only OTC + Rx Total
Survey T5 T6 T5 T6   T5 T6   T5 T6   T5 T6  
Age (years) n (%) n (%) % % OR (95 % CI)a % % OR (95 % CI)a % % OR (95 % CI)a % % OR (95 % CI)a
Women               
 30–39 408 (10.4) 295 (4.5) 46.3 55.6 1.45 (1.05–1.99) 2.2 1.4 0.75 (0.23–2.48) 10.3 9.2 1.09 (0.63–1.86) 58.8 66.1 1.37 (1.00–1.86)
 40–49 710 (18.1) 1880 (28.6) 44.9 49.3 1.29 (1.07–1.56) 5.2 3.8 0.87 (0.57–1.31) 10.9 13.6 1.41 (1.08–1.84) 61.0 66.6 1.29 (1.08–1.53)
 50–59 637 (16.2) 1245 (18.9) 32.2 43.6 1.68 (1.36–2.07) 6.0 5.1 1.05 (0.68–1.61) 12.7 11.7 1.85 (0.71–4.80) 50.9 60.4 1.49 (1.23–1.79)
 60–69 1187 (30.2) 1987 (30.2) 29.0 31.4 1.11 (0.96–1.29) 7.6 7.1 0.96 (0.74–1.24) 11.2 11.5 1.01 (0.83–1.22) 47.8 50.0 1.06 (0.94–1.21)
 70–79 871 (22.2) 886 (13.5) 23.7 26.1 1.16 (0.94–1.43) 9.5 8.5 0.95 (0.69–1.31) 11.5 14.3 1.25 (1.00–1.56) 44.7 48.9 1.14 (0.96–1.36)
 80+ 118 (3.0) 288 (4.4) 25.4 25.7 1.15 (0.68–1.92) 5.9 8.3 1.18 (0.80–1.77) 15.3 13.9 0.98 (0.53–1.82) 46.6 47.9 1.15 (0.76–1.74)
 30–89 3931 (100) 6581 (100) 32.9 38.9 1.26 (1.17–1.36) 6.7 5.7 0.98 (0.84–1.14) 11.5 12.5 1.19 (1.08–1.30) 51.1 57.2 1.21 (1.13–1.30)
 Age–adjustedb    36.7 42.9 1.30 (1.20–1.41) 5.5 4.8 0.98 (0.84–1.14) 11.5 11.9 1.20 (1.09–1.32) 53.7 59.6 1.24 (1.15–1.32)
 p, age trend    <.001 <.001   <.001 <.001   .370 .471   <.001 <.001  
Men               
 30–39 273 (8.7) 211 (3.6) 30.4 39.3 1.58 (1.08–2.30) 1.8 1.9 1.23 (0.32–4.64) 4.4 5.2 1.40 (0.60–3.29) 36.6 46.5 1.55 (1.08–2.22)
 40–49 569 (18.1) 1646 (27.9) 27.2 33.6 1.45 (1.18–1.78) 2.6 3.8 1.69 (0.97–2.95) 3.3 6.7 2.39 (1.45–3.94) 33.2 44.1 1.56 (1.29–1.89)
 50–59 332 (10.6) 1123 (19.0) 18.4 24.0 1.34 (1.01–1.79) 6.3 4.0 0.68 (0.42–1.13) 2.4 5.8 2.63 (1.25–5.51) 27.1 33.8 1.29 (1.01–1.65)
 60–69 1108 (35.2) 1939 (32.9) 14.0 18.4 1.37 (1.13–1.66) 5.7 4.5 0.84 (0.61–1.15) 4.5 5.2 1.19 (0.87–1.63) 24.2 28.1 1.21 (1.04–1.41)
 70–79 769 (24.5) 803 (13.6) 10.4 14.5 1.52 (1.13–2.06) 5.6 6.7 1.31 (0.88–1.94) 4.3 5.6 1.43 (0.91–2.24) 20.3 26.8 1.46 (1.17–1.83)
 80+ 94 (3.0) 178 (3.0) 10.6 10.1 0.93 (0.42–2.05) 7.5 5.6 0.75 (0.28–2.05) 1.1 4.5 4.27 (0.53–34.60) 19.2 20.2 1.05 (0.56–1.96)
 30–89 3145 (100) 5900 (100) 17.3 23.7 1.46 (1.32–1.61) 4.9 4.5 1.02 (0.84–1.23) 3.9 5.8 1.59 (1.31–1.92) 26.1 33.9 1.38 (1.27–1.50)
 Age–adjustedb    21.3 27.1 1.48 (1.33–1.65) 4.3 3.9 1.03 (0.85–1.24) 3.5 5.7 1.57 (1.29–1.91) 29.1 36.7 1.39 (1.27–1.52)
 p, age trend    <.001 <.001   .001 .001   .727 .127   <.001 <.001  
p, sex    <.001 <.001   .037 .046   <.001 <.001   <.001 <.001  
  1. The proportion of analgesic users last four weeks and odds ratios for use of analgesics in Tromsø 6 compared to Tromsø 5, according to age, sex and prescription category. The Tromsø Study: Tromsø 5 (2001–02, n = 7076) and Tromsø 6 (2007–08, n = 12,481)
  2. OTC “over-the-counter”, non-prescription, Rx prescription, T5 Tromsø 5, T6 Tromsø 6, CI confidence interval, OR odds ratio
  3. aReference category: non-users of both OTC and Rx
  4. bPrevalence estimates age-adjusted with the Norwegian population 01.01.2008 as standard population