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Table 4 Proportion of patients who redeemed at least one prescription per year

From: Use of prescription analgesic drugs before and after hip or knee replacement in patients with osteoarthritis

 

1. preoperative year

2. preoperative year

1. postoperative year

2. postoperative year

At least one prescription every year

N

% (95%CI)

N

% (95%CI)

N

% (95%CI)

N

% (95%CI)

N

% (95%CI)

Hip replacement (n = 6238)

 Any analgesic drug

3575

57.3 (56.1–58.5)

4565

73.2 (72.1–74.3)

4784

76.7 (75.6–77.7)

2819

45.2 (44.0–46.4)

1770

28.4 (27.3–29.5)

 Acetaminophen

832

13.3 (12.5–14.2)

1643

26.3 (25.3–27.4)

2566

41.1 (40.0–42.4)

1233

19.8 (18.8–20.8)

327

5.2 (4.7–5.8)

 NSAID

2996

48.0 (46.8–49.3)

3713

59.5 (58.3–60.7)

3785

60.7 (59.5–61.9)

1814

29.1 (28.0–30.2)

985

15.8 (14.9–16.7)

 Mild opioid

662

10.6 (0.99–11.4)

1412

22.6 (21.6–23.7)

1647

26.4 (25.3–27.5)

692

11.1 (10.3–11.9)

155

2.5 (2.1–2.9)

 Strong opioid

22

0.4 (0.2–0.5)

43

0.7 (0.5–0.9)

91

1.5 (1.2–1.8)

44

0.7 (0.5–0.9)

4

0.1 (0.00–0.01)

 Medication used for neuropathic pain

270

4.3 (3.8–4.8)

338

5.4 (4.9–6.0)

289

4.6 (4.1–5.2)

306

4.9 (4.4–5.4)

105

1.7 (1.4–2.0)

Knee replacement (n = 7501)

 Any analgesic drug

4624

61.7 (60.5–62.8)

5052

67.4 (66.3–68.4)

6399

85.3 (84.5–86.1)

4100

54.7 (53.5–55.8)

2678

35.7 (34.6–36.8)

 Acetaminophen

1196

15.9 (15.1–16.8)

1795

23.9 (23.0–24.9)

3309

44.1 (43.0–45.2)

1794

23.9 (23.0–24.9)

478

6.4 (5.8–6.9)

 NSAID

3863

51.5 (50.4–52.6)

3993

53.2 (52.1–54.4)

5313

70.8 (69.8–71.9)

2653

35.4 (34.3–36.5)

1561

20.8 (19.9–21.7)

 Mild opioid

963

12.8 (12.1–13.6)

1323

17.6 (16.8–18.5)

2988

39.8 (38.7–40.9)

1119

14.9 (14.1–15.7)

283

3.8 (3.3–4.2)

 Strong opioid

43

0.6 (0.4–0.7)

46

0.6 (0.4–0.8)

246

3.3 (2.9–3.7)

64

0.9 (0.7–1.1)

18

0.2 (0.1–0.4)

 Medication used for neuropathic pain

397

5.3 (4.8–5.8)

412

5.5 (5.0–6.0)

504

6.7 (6.2–7.3)

492

6.6 (6.0–7.1)

185

2.5 (2.1–2.8)

  1. NSAID; nonsteroidal anti-inflammatory drug, CI; Confidence interval