Skip to main content
. 2016 Oct 19;4:e2582. doi: 10.7717/peerj.2582

Table 2. Results of the estimation of λ1 from the 32 sets of simulations for which group effect is zero.

Coverage of 95% confidence intervals Percentage of estimates < true value
m.v. pattern Var(ɛ) a1 D Set Cox.b Cox.tp joineR stjm JM.pc JM.sp Cox.b Cox.tp joineR stjm JM.pc JM.sp
Monotone 16 0.02 a 1 94 94 91 94 97 94 24 40 50 52 59 53
b 2 83 93 92 94 95 95 27 40 52 53 57 52
c 3 82 88 92 93 69 84 20 24 53 58 90 79
d 4 92 90 94 95 91 94 44 24 53 57 40 59
0.1 a 5 88 94 91 96 87 91 33 37 52 56 83 76
b 6 90 94 93 97 88 92 25 32 50 55 85 80
c 7 84 85 94 95 NA 96 19 24 47 58 NA 79
d 8 88 94 91 95 87 91 33 37 52 62 83 76
4 0.02 a 9 96 95 91 93 96 94 46 52 48 48 56 53
b 10 92 95 93 93 96 95 43 54 53 53 61 53
c 11 92 94 96 97 74 83 39 47 49 50 92 82
d 12 96 95 91 92 96 94 46 52 48 54 56 53
0.1 a 13 92 95 91 95 89 95 48 46 48 54 74 72
b 14 92 96 92 95 88 93 48 49 47 54 80 79
c 15 94 92 94 93 NA 97 35 42 47 60 NA 83
d 16 92 95 91 94 89 95 48 46 48 58 74 72
Non-monotone 16 0.02 a 17 97 96 93 93 96 90 33 31 60 57 44 58
b 18 87 94 88 94 94 93 23 40 49 50 51 53
c 19 85 84 95 95 91 73 21 25 53 53 79 90
d 20 97 96 93 91 96 90 33 31 60 63 44 58
0.1 a 21 95 92 94 95 95 91 33 24 45 55 63 81
b 22 90 88 91 92 95 91 29 21 50 54 62 80
c 23 84 77 94 94 NA 96 20 12 52 63 NA 89
d 24 95 92 94 97 95 91 33 24 45 59 63 81
4 0.02 a 25 94 95 91 95 96 94 58 61 56 58 57 57
b 26 94 93 92 93 93 93 51 59 52 54 55 55
c 27 92 93 96 96 93 86 43 37 46 47 70 87
d 28 94 95 91 93 96 94 58 61 56 64 57 57
0.1 a 29 96 94 95 93 93 89 63 30 50 52 62 75
b 30 92 96 93 93 94 87 58 40 53 60 63 82
c 31 97 89 96 95 NA 92 46 17 48 58 NA 91
d 32 96 94 95 95 93 89 63 30 50 60 62 75

Notes:

m.v. pattern, Missing value pattern.

Var(ɛ), Variance of the random errors in the longitudinal submodel.

a1, Fixed-effect slope in the longitudinal submodel.

D, Covariance matrix of the random effects in the longitudinal submodel. Refer to Table 1.

λ1, Parameter for the effect of the time-dependent predictor on survival (true value = −0.03).

NA, Not available due to convergence problems.

Refer to Fig. 1 for other abbreviations.

Shading: 95% Confidence interval coverage < 90% or % estimates < true value is outside the interval [40, 60].