Table 1.
Sensitivity Analysis for the Effect of a Friend’s Obesity Status on an Ego’s Obesity Corrected Contagion Effect Estimates Under Latent Homophily for Obesity: Percent Increase (95% CI)
| Prevalence of U | Effect of latent factor U on Obesity (γ) | ||||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| 1.2 | 1.5 | 1.8 | 2 | 2.5 | 3 | 4 | |
| π1 =0.6, π0=0.4 | 51 (2,115) | 45 (−2,105) | 40 (−5,99) | 37 (−7,95) | 32 (−10,88) | 28 (−13,82) | 23 (−17,75) |
| π1 =0.65, π0=0.35 | 48 (0,111) | 39 (−1,98) | 32 (−11,88) | 28 (−13,82) | 21 (−18,72) | 16 (−21,64) | 9 (−26,55) |
| π1 =0.7, π0=0.3 | 46 (−1,107) | 34 (−10,90) | 25 (−16,77) | 20 (−19,70) | 11 (−25,58) | 5 (−29,49) | −4 (−35,37) |
| π1 =0.7, π0=0.25 | 45 (−2,105) | 31 (−11,86) | 21 (−18,72) | 15 (−22,64) | 5 (−29,50) | −2 (−38,39) | −11 (−40,26) |
| π1 =0.75, π0=0.25 | 43 (−3,104) | 28 (−13,82) | 18 (−21,67) | 12 (−24,59) | 2 (−31,44) | −6 (−36,34) | −15 (−43,20) |
| π1 =0.8, π0=0.25 | 42 (−4,101) | 26 (−15,79) | 15 (−22,63) | 9 (−26,55) | −2 (−34,39) | −9 (−39,29) | −19 (−45,14) |
| π1 =0.8 π0=0.2 | 41 (−5,100) | 23 (−17,75) | 11 (−25,58) | 5 (−29,49) | −7 (−37,31) | −15 (43,20) | −26 (−50,5) |
Settings with π1 < π0 all result with percent increase and 95% CI large than the observed estimate of 57 (6, 123)