#!/usr/bin/env python
# coding: utf-8

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from __future__ import print_function, division

import nsfg3


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df = nsfg3.ReadFemResp2002()


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sum(df.evrmarry)


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len(df[(df.cmbirth >= 301) & (df.cmbirth <= 1164)])


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len(df[(df.cmmarrhx >= 301) & (df.cmmarrhx <= 1164)])


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len(df[(df.cmmarrhx.isnull())])


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df.cmintvw.value_counts().sort_index()


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df.finalwgt.value_counts().sort_index()


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