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Table 1 Patient demographics

From: Intrauterine lidocaine and naproxen for analgesia during intrauterine device insertion: randomized controlled trial

Characteristic Lidocaine/Naproxen (n = 39) Lidocaine/Placebo (n = 39) Saline/Naproxen (n = 40) Saline/Placebo (n = 39) P
Age (y) 31.1 ± 8.5 31.1 ± 7.4 31.2 ± 6.5 29.7 ± 6.9 0.788
BMI (kg/m2) 27.6 ± 6.4 26.0 ± 4.1 27.1 ± 5.1 25.9 ± 4.4 0.340
Parity      0.510
 Nulliparous 13 (33.3) 17 (43.6) 11 (27.5) 14 (35.9)  
 Parous 26 (66.7) 22 (56.4) 29 (72.5) 25 (64.1)  
 Vaginal parity 18 (46.1) 15 (38.4) 12 (30.0) 14 (35.9) 0.408
 Prior c-section 10 (25.6) 9 (23.1) 20 (50.0) 14 (35.9) 0.031
Prior IUD insertion      0.605
 Yes 6 (15.4) 9 (23.0) 12 (30.0) 8 (20.5)  
 No 33 (84.6) 30 (76.9) 28 (70.0) 31 (79.5)  
Prior Cervical procedures      0.298
 Yes 5 (12.5) 12 (30) 6 (15) 6 (15.4)  
 No 34 (85) 27 (67.5) 34 (85) 33 (84.6)  
Ease of insertion      0.99
 Easy 38 (97.4) 38 (97.4) 38 (95) 36 (94.7)  
 Difficult 1 (2.6) 1 (2.6) 2 (0.5) 2 (5.2)  
  1. Data are n%, unless otherwise specified
  2. BMI body mass index, IUD intrauterine device