Table 6. Age reporting distortion in sibling histories obtained from women and men.

Country	Year of survey	Modified Whipple’s Index* of current ages of living sibling				Modified Whipple’s Index* of ages at death of deceased sibilngs
		Sister		Brother		Sister		Brother
		Women	Men	Women	Men	Women	Men	Women	Men
Cameroon	2004	122	114	120	113	138	150	167	155
Congo	2005	115	116	121	115	128	121	161	131
Indonesia	2007	123	132	129	120	200	186	208	177
Malawi	1992	107	110	106	105	141	138	145	99
Nigeria	2008	151	133	138	155	186	167	184	166
Tanzania	1996	119	113	116	116	137	126	140	138
Uganda	1995	122	122	116	125	145	155	151	138
Zambia	2007	111	112	111	111	118	120	133	131
Zimbabwe	1994	113	109	111	106	139	122	142	109
Zimbabwe	2005–06	108	112	121	113	121	123	137	121
Average		119	117	119	118	145	141	157	136

^*Modified Whipple’s Index: an index of age attraction for digits 0 and 5. The index is the ratio of the sum of the populations aged 15, 20, 25, 30, 35, 40, 45 and 50 divided by the sum of the population aged 13 to 52 and the result is multiplied by 500. Suggested interpretation is as follows: <105 is “highly accurate”; 105–109.9 is “fairly accurate”; 110–124.9 is “approximate”; 125–174.9 is “rough” and ≥175 is “very rough”.