Derivation
variable: height (table[s]: art_arte, art_artn, arv_amf, arv_scf, bis_mother, fhs_tktaik, fhs_tktcik, iis_mother, gp_gpform, css_sei, tb_tbh, tb_tboto2007, tb_tbx, tb_tbxto2007, tbold_tbpart1, tb_tbs, tb_tbs5, tmt_tmt1, ncd_combined, css_fis1, arkk_arkq)
variable: height2 (table[s]: art_arto, art_artx, tb_tbi)
variable: wt (table[s]: cpt_f3)
variable: blength (table[s]: crs_birth, crs_bfup)
variable: a_hghtop1 (table[s]: gap_combined)
variable: heigf/heigs (table[s]: sts_fup, sts_stsf, sts_stsp)
variable: heightf/heights (table[s]: kduk_kduq, phdk_phdq)
variable: length (table[s]: ves_vese)
Height from STS, KDU and PHD were collected twice so average of the 2 readings is calculated. All height variables from the various tables are in cm so if necessary are renamed to height