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Table 2 Utility estimates from Hierarchical Bayes models

From: Optimizing the design of a contraceptive microarray patch: a discrete choice experiment on women’s preferences in India and Nigeria

  HB Model 1: India HB Model 2: Nigeria HB Model 3: Nigeria
Attribute levels B SD 95% CI B SD 95% CI B SD 95% CI
No pain at application 13.0 23.0 (11.0, 15.0) 33.0 32.2 (30.2, 35.7) 58.5 38.0 (54.9, 62.2)
Light prick 3.8 22.1 (1.8, 5.7) − 1.9 24.5 (− 4.0, 0.2) − 4.4 20.3 (− 6.4, − 2.5)
Hard prick − 16.8 24.2 (− 18.9, − 14.6) − 31.0 30.0 (− 33.6, − 28.5) − 54.1 37.4 (− 57.7, − 50.5)
One day rash 20.8 20.6 (19.0, 22.6) 10.7 12.6 (9.7, 11.8) 25.2 20.8 (23.2, 27.2)
Three day rash − 20.8 20.6 (− 22.6, − 19.0) − 10.7 12.6 (− 11.8, − 9.7) − 25.2 20.8 (− 27.2, − 23.2)
Foot application 4.1 20.4 (2.3, 5.9) − 9.1 19.2 (− 10.8, − 7.5) − 12.7 30.4 (− 15.7, − 9.8)
Knee application − 10.6 25.2 (− 12.8, − 8.4) − 0.5 28.2 (− 2.9, 1.9) 12.1 31.3 (9.1, 15.1)
Wrist application 6.5 25.9 (4.2, 8.8) 9.7 24.1 (7.6, 11.7) 0.7 27.0 (− 1.9, 3.3)
Small size 7.5 25.6 (5.2, 9.7) 8.1 20.5 (6.4, 9.9) 17.3 25.0 (14.8, 19.7)
Medium size 0.2 18.3 (− 1.5, 1.8) 6.0 16.9 (4.6, 7.5) 3.7 13.1 (2.4, 4.9)
Large size − 7.6 21.9 (− 9.6, − 5.7) − 14.2 23.4 (− 16.2, − 12.2) − 20.9 27.4 (− 23.5, − 18.3)
One month duration − 30.3 38.7 (− 33.7, − 26.9) − 59.9 73.5 (− 66.2, − 53.7) − 96.8 82.8 (− 104.8, − 88.9)
Three month duration 0.7 20.4 (− 1.1, 2.5) 11.3 18.8 (9.7, 12.8) 13.5 18.8 (11.7, 15.3)
Six month duration 29.7 30.5 (27.0, 32.3) 48.7 66.4 (43.0, 54.3) 83.3 78.1 (75.8, 90.8)
Regular menses 177.0 84.7 (169.5, 184.4) 114.3 80.8 (107.4, 121.2)    
Irregular menses − 45.9 39.3 (− 49.4, − 42.4) − 52.0 65.0 (− 57.6, − 46.5)    
Amenorrhea − 131.1 71.1 (− 137.3, − 124.8) − 62.3 101.3 (− 70.9, − 53.7)    
Interactions
 1 mo x Regular − 41.2 26.3 (− 43.5, − 38.9)        
 1 mo x Irregular 7.2 15.9 (5.8, 8.6)        
 1 mo x Amenorrhea 34.0 33.7 (31.0, 37.0)        
 3 mo x Regular 1.5 15.8 (0.1, 2.9)        
 3 mo x Irregular 3.4 18.4 (1.8, 5.0)        
 3 mo x Amenorrhea − 4.9 16.8 (− 6.4, − 3.4)        
 6 mo x Regular 39.7 25.0 (37.5, 41.9)        
 6 mo x Irregular − 10.6 20.9 (− 12.4, − 8.8)        
 6 mo x Amenorrhea − 29.1 27.1 (− 31.4, − 26.7)        
Model statistics
 Percent certainty 0.7    0.7     0.7   
 Fit statistic (RLH) 0.8    0.8     0.8   
 Covariates 3    3     3   
  1. B are estimated model coefficients representing the utility of each attribute level for the population. B, SD and 95% CI are obtained in an iterative process using a Monte Carlo Markov Chain process