Question

How can I write APA Results from two way anova from results two determine wheather birthweight differsas a function of smoking or hypertension in the mother if the effect size is .003 and p value is is less th .05

Answer 1

Guidelines for writing the result in American Psychological Association, APA style results.

1. Report data in order to sufficiently justify your conclusions.

2. Don't Omit Relevant Findings. Don't ignore negative results.

3. Summarize your result, include tables and figures

4. There's no need to explain what a t-test is or how a one-way ANOVA works; just report the results. Include effect sizes in your results section so that readers can appreciate the importance of your study's findings.

Now back to your question of reporting two way ANOVA from results two determine whether birthweight differs as a function of smoking or hypertension in the mother if the effect size is 0.003 and p-value is less than 0.05

You have provided effect size and p-value but haven't mentioned whether the values are corresponding to the main effect of smoking or main effect of hypertension or interaction effect of smoking*hypertension.

Dependent variable: Birthweight

Independent variables: Smoking and hypertension

when you will conduct two way ANOVA analysis with above dependent and independent variables your result table will look like following.

Dependent variable	Birthweight
Source	SS	df	MS	F	Sig	Partial eta squared
Intercept	SS_I	df_I	MS_I	F_I	p_I	e_I
Smoking	SS_S	df_S	MS_S	F_S	p_S	e_S
Hypertension	SS_H	df_H	MS_H	F_H	p_H	e_H
Smoking*hypertension	SS_SH	df_SH	MS_SH	F_SH	p_SH	e_SH
Error	SS_E	df_E	MS_E
Total	SS_T	df_T	MS_T

Since I don't have data, I have replaced each value with a name, so you could know what values to place

If your p-value is less than 0.05, say your effect is SIGNIFICANT, else NOT SIGNIFICANT.

APA Results from two way ANOVA:

1) when the main effect of hypertension is only significant

A two way ANOVA was conducted to determine whether birthweight was affected by smoking and hypertension. There was a significant main effect of hypertension, F(df_H,df_E) = F_H, p = p_H, = e_H. There was a no significant main effect of smoking, F(df_S,df_E) = F_S, p = p_S, = e_S or interaction effect where birthweight from hypertension differed as a function of smoking  F(df_SH,df_E) = F_SH, p = p_SH, = e_SH. the null hypothesis of no difference between birth weight and hypertension is rejected. However, we fail to reject the of no difference between birth weight and smoking and that hypertension differs as a function of smoking.

2) when the main effect of hypertension and smoking are both significant and effect size of hypertension is almost twice of smoking

A two way ANOVA was conducted to determine whether birthweight was affected by smoking and hypertension. There was a significant main effect of hypertension, F(df_H,df_E) = F_H, p = p_H, = e_H. There was a significant main effect of smoking, F(df_S,df_E) = F_S, p = p_S, = e_S. The relative impact of hypertension is more than twice as strong as smoking on birthweight. There was a no significant interaction effect where birthweight from hypertension differed as a function of smoking  F(df_SH,df_E) = F_SH, p = p_SH, = e_SH. The null hypothesis of no difference between birth weight and hypertension and the null hypothesis of no difference between birth weight and smoking is rejected. However, we fail to reject the null hypothesis of no difference between birth weight and smoking and that hypertension differs as a function of smoking.

Please rate the solution if you like it. thank you.

Don't forget to replace the values in the result with your result in the 2-way ANOVA table.