Table 1

Pass-through coefficients (February to April) and monthly effects, nominal prices

	Pre-2010				Post-2010
Data from month	β (Feb-Apr) or δ	95% CI	N	R²	β	95% CI	N	R²
Feb	0.04***	0.03 to 0.06	1676	0.02	0.02	−0.01 to 0.05	1213	0.00
Mar	1.21***	1.18 to 1.25	1700	0.84	1.11***	1.06 to 1.15	1187	0.69
Apr	0.13***	0.10 to 0.15	1176	0.09	0.12***	0.09 to 0.14	1678	0.06
May	0.04***	0.02 to 0.06	1199	0.03	0.01***	−0.00 to 0.03	1606	0.00
Jun	0.05***	0.03 to 0.06	1211	0.04	0.00	−0.02 to 0.02	1602	0.00
Jul	0.33***	0.28 to 0.37	1216	0.29	0.11***	0.09 to 0.14	1667	0.05
Aug	0.94***	0.88 to 1.00	1210	0.54	0.15***	0.13 to 0.18	1493	0.14
Sep	0.11***	0.09 to 0.14	1202	0.09	0.17***	0.14 to 0.20	1436	0.11
Oct	0.05***	0.03 to 0.06	1205	0.03	0.01	−0.01 to 0.02	1447	0.00
Nov	0.04***	0.02 to 0.05	1190	0.02	0.02*	−0.00 to 0.04	1447	0.00
Dec	0.02	−0.01 to 0.05	1189	0.00	0.02**	0.00 to 0.03	1455	0.00
Jan	0.03***	0.01 to 0.05	1151	0.01	−0.00	−0.02 to 0.01	1280	0.00

The β coefficients for February to April are derived from equation 1 (in text), and are pass-through coefficients. The δ coefficients for May to January are derived from equation 2 and indicate the month-on-month average increase in cigarette prices, expressed in rand per pack. N = the number of brand-region combinations.
Significance: ***=1%; **=5%; *=10%