Re: [R] Meta-analysis with zero values for mean and sd. Continuous data.

2011-07-09 Thread Uwe Ligges
On 09.07.2011 13:14, aletheia wrote: Hi! I want to do a meta-analysis with count data for treatement/control cases. Mi problem is that I need to use zero values (an informative value) for the mean and standard deviation for one of the treatement, but R has a problem: "Studies with zero values f

[R] Meta-analysis with zero values for mean and sd. Continuous data.

2011-07-09 Thread aletheia
Hi! I want to do a meta-analysis with count data for treatement/control cases. Mi problem is that I need to use zero values (an informative value) for the mean and standard deviation for one of the treatement, but R has a problem: "Studies with zero values for sd.e or sd.c get no weight in meta-ana

[R] Meta-analysis with zero values for mean and sd. Continuous data.

2011-07-09 Thread Rosana Ferrero
Hi, I want to do a meta-analysis with count data for treatement/control cases. Mi problem is that I need to use zero values (an informative zero value) for the mean and standard deviation for one of the treatement, but R has a problem: "Studies with zero values for sd.e or sd.c get no weight in met