Table 1.

Example 1. Comparison of summary measures estimated from publication and their corresponding reconstructed data

	Original publication	Guyot et al. (2012)	ipdfc
Radiotherapy arm		Percent [95% CI]	Percent [95% CI]
Percent surviving one year	55	56.1 [49.6, 63.3]	56.9 [49.9, 63.2]
Percent surviving two years	41	41.1 [34.7, 48.6]	40.9 [34.2, 47.5]
Percent surviving three years	34	34.7 [28.4, 42.5]	33.5 [27.1, 40.1]
Median duration	14.9	14.9 [11.9, 23.0]	16.1 [11.9, 20.4]
Radiotherapy plus cetuximab arm		Percent [95% CI]	Percent [95% CI]
Survival rate at one year	63	64.0 [57.8, 70.9]	65.4 [58.2, 71.6]
Survival rate at two years	50	50.4 [43.9, 57.8]	51.0 [43.3, 58.6]
Survival rate at three years	47	46.7 [40.1, 54.4]	49.6 [40.4, 55.7]
Median duration	24.4	24.3 [15.7, 45.7]	23.7 [15.6, 46.8]
Hazard ratio with 95% CI
	0.68 [0.52, 0.89]	0.73 [0.57, 0.94]	0.72 [0.56, 0.93]