From: China’s fertility change: an analysis with multiple measures
Year
Variable-r
Variable-r_2
P/F (a census)
P/F(two censuses)
Reverse survival
1982
2.95
1990
2.29
2.63
2000
1.43
1.54
2010
1.50
1990–2000
1.58
1.74
1.35
2000–2010
1.68
1.52
1.32