Table 3

Birth Total no of girls Mean age at 95%

position who have attained menarche Confidence
menarche Interval, CI

1^st                            437                                        13.02+1.22           12.91-13.13
2^nd                           333                                        13.04+1.09           12.92-13.16
3^rd                            323                                       13.14+1.12           13.02-13.26
4^th                            164                                        3.30+1.23            13.11-13.49
5^th                             77                                         13.52+1.19            13.25-13.79
6^th                             33                                        13.53+1.38             13.06-14.00
7^th                             38                                        13.65+1.40             13.21-14.10
8^th                             27                                        13.68+1.43             13.14-14.23

Total 1640 13.44+1.32 13.38-13.50

Table 3: Birth position and mean age at menarche.