document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1028909>Question 1028909</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how can i get standard deviation and sample size from the following data \r<BR>\n" );
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document.write( "Data from five paediatric centres were compared in children<BR>\n" );
document.write( "who received 0.05 (41 episodes) or 0.1 units/kg/h (52 episodes)<BR>\n" );
document.write( " In the low vs. standard dose group, at 6 h following admission,<BR>\n" );
document.write( "the fall in blood glucose levels [11.3 (95% confidence interval 8.6 to 13.9) vs. 11.8 (8.4 to 15.2) mmol/L, p = 0.86] and rise in pH [0.13 (0.09 to 0.18) vs.<BR>\n" );
document.write( "0.11 (0.07 to 0.15), p = 0.78] were similar\r<BR>\n" );
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document.write( "it's not home work it's a research <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #644070 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=644070\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Is p = 0.86 a statistics p-value?  If not, what is it?<BR>\n" );
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document.write( "if we assume a standard normal distribution<BR>\n" );
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document.write( "consider the first two confidence intervals with p = 0.86 <BR>\n" );
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document.write( "upper 95% limit = sample mean + (standard error for sample mean(SEM) * 1.96)<BR>\n" );
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document.write( "13.9 = 11.3 + (SEM * 1.96)<BR>\n" );
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document.write( "SEM = (13.9 - 11.3) / 1.96 = 1.326530612<BR>\n" );
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document.write( "sample size = (critical value * SEM / margin of error (ME))^2<BR>\n" );
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document.write( "note that ME for a 95% confidence interval is 0.05<BR>\n" );
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document.write( "sample size = (1.96 * 1.326530612 / 0.05)^2 is approx 2704 </SPAN>\n" );
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