* For further details see http://jutze.com/research/2016-schult-sparfeldt-pirls-timss * MC vs CR * average number of items by itemtype * * written by Johannes Schult jutze@jutze.com * last updated 2014-06-26 version 13.1 set more off clear * IGLU gen mc1 = . gen cr2_1 = . gen cr3_1 = . gen cr4_1 = . gen mc2 = . gen cr2_2 = . gen cr3_2 = . gen cr4_2 = . set obs 13 replace mc1 = 6 in 1 replace cr2_1 = 3 in 1 replace cr3_1 = 2 in 1 replace cr4_1 = 1 in 1 replace mc2 = 6 in 1 replace cr2_2 = 6 in 1 replace cr3_2 = 2 in 1 replace cr4_2 = 0 in 1 replace mc1 = 6 in 2 replace cr2_1 = 4 in 2 replace cr3_1 = 2 in 2 replace cr4_1 = 1 in 2 replace mc2 = 7 in 2 replace cr2_2 = 3 in 2 replace cr3_2 = 3 in 2 replace cr4_2 = 0 in 2 replace mc1 = 7 in 3 replace cr2_1 = 3 in 3 replace cr3_1 = 3 in 3 replace cr4_1 = 0 in 3 replace mc2 = 8 in 3 replace cr2_2 = 2 in 3 replace cr3_2 = 3 in 3 replace cr4_2 = 1 in 3 replace mc1 = 8 in 4 replace cr2_1 = 2 in 4 replace cr3_1 = 3 in 4 replace cr4_1 = 1 in 4 replace mc2 = 7 in 4 replace cr2_2 = 1 in 4 replace cr3_2 = 4 in 4 replace cr4_2 = 0 in 4 replace mc1 = 7 in 5 replace cr2_1 = 1 in 5 replace cr3_1 = 4 in 5 replace cr4_1 = 0 in 5 replace mc2 = 4 in 5 replace cr2_2 = 3 in 5 replace cr3_2 = 3 in 5 replace cr4_2 = 1 in 5 replace mc1 = 4 in 6 replace cr2_1 = 3 in 6 replace cr3_1 = 3 in 6 replace cr4_1 = 1 in 6 replace mc2 = 6 in 6 replace cr2_2 = 2 in 6 replace cr3_2 = 3 in 6 replace cr4_2 = 1 in 6 replace mc1 = 6 in 7 replace cr2_1 = 2 in 7 replace cr3_1 = 3 in 7 replace cr4_1 = 1 in 7 replace mc2 = 7 in 7 replace cr2_2 = 2 in 7 replace cr3_2 = 3 in 7 replace cr4_2 = 0 in 7 replace mc1 = 7 in 8 replace cr2_1 = 2 in 8 replace cr3_1 = 3 in 8 replace cr4_1 = 0 in 8 replace mc2 = 6 in 8 replace cr2_2 = 2 in 8 replace cr3_2 = 3 in 8 replace cr4_2 = 1 in 8 replace mc1 = 6 in 9 replace cr2_1 = 2 in 9 replace cr3_1 = 3 in 9 replace cr4_1 = 1 in 9 replace mc2 = 6 in 9 replace cr2_2 = 4 in 9 replace cr3_2 = 2 in 9 replace cr4_2 = 1 in 9 replace mc1 = 6 in 10 replace cr2_1 = 4 in 10 replace cr3_1 = 2 in 10 replace cr4_1 = 1 in 10 replace mc2 = 4 in 10 replace cr2_2 = 3 in 10 replace cr3_2 = 3 in 10 replace cr4_2 = 1 in 10 replace mc1 = 6 in 11 replace cr2_1 = 2 in 11 replace cr3_1 = 3 in 11 replace cr4_1 = 1 in 11 replace mc2 = 7 in 11 replace cr2_2 = 3 in 11 replace cr3_2 = 3 in 11 replace cr4_2 = 0 in 11 replace mc1 = 7 in 12 replace cr2_1 = 2 in 12 replace cr3_1 = 3 in 12 replace cr4_1 = 0 in 12 replace mc2 = 8 in 12 replace cr2_2 = 2 in 12 replace cr3_2 = 3 in 12 replace cr4_2 = 1 in 12 replace mc1 = 6 in 13 replace cr2_1 = 2 in 13 replace cr3_1 = 3 in 13 replace cr4_1 = 1 in 13 replace mc2 = 7 in 13 replace cr2_2 = 1 in 13 replace cr3_2 = 4 in 13 replace cr4_2 = 0 in 13 egen itemn1 = rowtotal(mc1-cr4_1) egen itemn2 = rowtotal(mc2-cr4_2) *************************** * Table 1: PIRLS validity * *************************** sum clear * TIMSS gen mc1 = . gen cr2_1 = . gen cr3_1 = . gen cr4_1 = . set obs 14 replace mc1 = 2 in 1 replace cr2_1 = 8 in 1 replace cr3_1 = 1 in 1 replace mc1 = 6 in 2 replace cr2_1 = 8 in 2 replace cr3_1 = 0 in 2 replace mc1 = 3 in 3 replace mc1 = 8 in 4 replace mc1 = 7 in 5 replace mc1 = 7 in 6 replace mc1 = 10 in 7 replace mc1 = 9 in 8 replace mc1 = 6 in 9 replace mc1 = 7 in 10 replace mc1 = 8 in 11 replace mc1 = 10 in 12 replace mc1 = 3 in 13 replace mc1 = 8 in 14 replace cr2_1 = 9 in 3 replace cr2_1 = 5 in 4 replace cr2_1 = 3 in 5 replace cr2_1 = 5 in 6 replace cr2_1 = 2 in 7 replace cr2_1 = 4 in 8 replace cr2_1 = 4 in 9 replace cr2_1 = 5 in 10 replace cr2_1 = 5 in 11 replace cr2_1 = 4 in 12 replace cr2_1 = 5 in 13 replace cr2_1 = 5 in 14 replace cr3_1 = 0 in 3 replace cr3_1 = 1 in 4 replace cr3_1 = 1 in 5 replace cr3_1 = 2 in 6 replace cr3_1 = 0 in 7 replace cr3_1 = 1 in 8 replace cr3_1 = 1 in 9 replace cr3_1 = 2 in 10 replace cr3_1 = 0 in 11 replace cr3_1 = 0 in 12 replace cr3_1 = 1 in 13 replace cr3_1 = 1 in 14 egen itemn1 = rowtotal(mc1-cr4_1) *************************** * Table 1: TIMSS validity * *************************** sum clear