Second-Round-Harmonisation.md

@@ -19,3 +19,25 @@
   - Added missing value type (integer) for variable `vent_mech_bin_ga36w`
 * WP7_harmonisation_maternal_timevarying1.1
   - Changed value type from `binary` to `integer` for variables `mat_partner_bin_*`
+
+## Frequently Asked Questions
+
+### Dictionary questions
+
+**Q:** Which version of the dictionaries should I use?
+
+**A:** Please use the most recent version of the dictionaries, which can be downloaded above.
+
+**Q:** But I've already started doing the harmonisation with an older version of the dictionaries - what should I do? Do I have to start all over again?
+
+**A:** No, do not worry!  Just download the dictionary of the view where the harmonisation is   being done; make the necessary changes in the dictionary file (as indicated in the changelog above); then, remove the view and create it again, this time using the new dictionary.
+
+### Data questions
+
+**Q:** Do you recommend a specific tool to calculate the requested z-scores for harmonization of birth weights, heights etc as batch?
+
+**A:** No. The z-scores only need to be harmonised if they already exist in your data set and/or if there are country-specific norms that are in general usage (e.g. both UK and France have specific growth curves that have been created for their populations).
+
+
+
+